Best Non Gamstop Casino UK: Independent Analysis of International iGaming Sites (2026)
Last checked: August 2026
Audience: Adults aged 18+ only
Important: This is an analytical guide, not a recommendation to bypass self-exclusion. If you are registered with GAMSTOP, are trying to stop gambling or find gambling difficult to control, do not use this page to find another operator. Seek confidential support instead.
The UK online gambling market is shaped by a strict regulatory framework under the Gambling Commission. International casino sites that are not connected to GAMSTOP are often discussed by UK-based search users because they may use different licences, banking options, game catalogues and promotional structures.
Those differences require careful analysis. A larger bonus, a wider game library or an alternative payment method does not establish that an operator is reliable, appropriately licensed, suitable for a UK user or able to provide the same consumer protections as a UKGC-regulated casino.
This guide examines international non-GamStop casino sites through an editorial framework focused on operator transparency, licensing information, game quality, payment workflows, withdrawal conditions, account verification, mobile usability, complaints procedures and player-protection controls. Rankings are editorial opinions, not guarantees of availability, legal status, payout performance or future bonus value.
What Is a Non-GamStop Casino?
A non-GamStop casino is an online gambling operator that is not connected to the GAMSTOP self-exclusion scheme. In UK search terminology, the phrase commonly refers to an international casino website operating outside the UK Gambling Commission licensing framework.
Non-GamStop status only explains the casino’s relationship with GAMSTOP. It does not establish that the operator is licensed, trustworthy, safe, suitable for UK users or exempt from verification checks. Every casino should be assessed separately for its legal company information, licence, banking rules, cashout process, account controls, complaints procedure and responsible gambling tools.
An international operator may offer a different mix of payment methods, promotions, games and account procedures from a UKGC-regulated casino. An overseas licence, however, is not the same as authorisation to provide gambling facilities to consumers in Great Britain.
If you are currently registered with GAMSTOP, a non-GamStop site should not be treated as an alternative. GAMSTOP exists to help people restrict access to gambling websites and apps operated by licensed gambling businesses in the UK.
Comparative Matrix: UKGC Casinos vs International Operators
The differences between UKGC-regulated casinos and international operators are rooted in their regulatory frameworks. The table below is a general comparison only; individual operators can differ significantly and should always be checked independently.
| Evaluation Factor | UKGC-Regulated Casinos | International Non-GamStop Operators |
|---|---|---|
| Self-exclusion | Connected to GAMSTOP and other UK safer gambling obligations | May use operator-level limits, time-outs or self-exclusion; not connected to GAMSTOP |
| Licensing framework | UK Gambling Commission | May operate under an overseas licensing jurisdiction |
| Payment options | Subject to UK rules and operator policy | May advertise different cards, e-wallets or cryptocurrency options |
| Product design | Subject to UK rules on game design and marketing | May use different game features, bonus mechanics and interface standards |
| Dispute route | UKGC framework and UK-facing consumer safeguards | May use a different legal jurisdiction and complaints process |
| Player protection | UK-specific social responsibility requirements | Quality and availability of controls can vary materially by operator |
These differences do not mean that an international operator is automatically better or worse. They mean that UK readers must assess licensing, payments, account terms, withdrawal rules and player-protection tools more carefully before deciding whether to register.
Top International Casino Sites: Editorial Comparison
The following brands are included because they are frequently referenced in international non-GamStop casino searches. Inclusion does not mean that a brand is UKGC-licensed, currently available to all UK residents or suitable for every player. Readers must check the operator’s current restricted-country policy, legal entity, licence and terms before registering.
| Casino | Editorial Positioning | Primary Area of Analysis | Key Checks Before Registration |
|---|---|---|---|
| MyStake | Broad casino and sportsbook proposition | Game depth and multi-product structure | Legal entity, current licence, restricted countries and withdrawal terms |
| Donbet | Casino and sportsbook model | Payment workflows and casino/sports balance | Cashout limits, verification policy and complaint route |
| Goldenbet | General-purpose casino proposition | Casino variety and promotional conditions | Licence details, bonus terms and payment availability |
| Rolletto | Casino and sportsbook with crypto focus | Crypto banking and high-limit claims | Network fees, wallet rules, KYC triggers and payout limits |
| Velobet | Sportsbook and casino platform | Welcome-package mechanics and mobile use | Restricted-country policy, bonus conditions and withdrawals |
| Mad Casino | Casino-led promotional model | Free-spin and bonus terms | Wagering, maximum bet, expiry and max-cashout clauses |
| BetFoxx | Slots and table-game proposition | Game rules and payment methods | Provider list, table rules and banking availability |
| FrostyBet | Privacy-oriented marketing position | Account verification and crypto terms | Legal operator, KYC policy and responsible gambling controls |
| Slots Amigo | Casual casino and bingo positioning | Mobile usability and game formats | Game availability, support and withdrawal methods |
| Aztec Paradise | Theme-led online casino proposition | Loyalty rules and provider transparency | Operator details, loyalty conditions and payment policy |
The table is a framework for comparison rather than a promise that each operator accepts UK users or offers the same conditions at all times. The practical value of a casino proposition depends on the complete set of published terms, not a single promotional claim.
MyStake — Broad Casino and Sportsbook Proposition
MyStake is positioned as an international casino and sportsbook brand with slots, live dealer games, sports markets and multi-currency payment options. Its analytical relevance comes from the breadth of the product rather than a single welcome offer.
Before registration, readers should verify the current operator identity, licensing information, restricted-country policy, payment rules and withdrawal process. A broad catalogue is useful only when the games, providers, game rules and cashout conditions are transparent.
Editorial view: Relevant for readers prioritising game variety and a multi-product account, subject to independent verification of current terms and availability.
Donbet — Casino and Sportsbook Model
Donbet combines casino games, sports betting and promotions within one account. Its value proposition should be assessed through the balance between casino content, sportsbook terms, banking options and account requirements.
Claims about fast cashouts, high limits or fee-free payments should be treated as operator statements unless they can be independently confirmed through current terms or real, documented testing. The key checks are withdrawal limits, payment-method eligibility, KYC triggers and the complaints process.
Editorial view: A multi-product option that requires particular scrutiny of banking and verification terms.
Goldenbet — General-Purpose Casino Alternative
Goldenbet is positioned as an international casino and betting platform with slots, live casino, table games and sports content. Its general-purpose format may appeal to readers who want access to several casino categories rather than a highly specialised product.
The analysis should focus on the underlying operator, licence, game providers, promotional restrictions and cashout policy. A broad product range does not remove the need to confirm whether an operator is currently permitted to accept a UK-based user.
Editorial view: A broad casino proposition whose practical value depends on current terms, transparency and payout conditions.
Rolletto — Crypto and Higher-Limit Claims
Rolletto is often associated with crypto casinos, casino games, sports betting and higher-limit positioning, which makes it relevant because many non-GamStop casinos accept cryptocurrency for payments. Crypto may offer a different payment workflow, but it does not eliminate account verification, withdrawal reviews, wallet checks or responsible gambling risk.
Before using crypto, confirm whether the site accepts cryptocurrencies like Bitcoin and Ethereum, then check the exact supported network, transaction fee, minimum deposit, minimum withdrawal, payout limit, wallet-address procedure and circumstances in which the operator can request identity documents.
Editorial view: Most relevant to readers comparing crypto banking, provided they understand transaction irreversibility and account-verification conditions.
Velobet — Promotional and Mobile-Focused Positioning
Velobet presents a combined sportsbook and casino proposition with welcome-package messaging and mobile access. Promotional value should be assessed through the full rules, including wagering, eligible games, maximum bet, bonus expiry and maximum withdrawal from bonus winnings.
Mobile convenience should not outweigh account controls. Readers should check whether payment settings, withdrawal requests, limits, support and account closure tools are accessible on smaller screens.
Editorial view: A platform to assess through its current bonus mechanics, mobile cashier and withdrawal rules rather than through the promotional headline.
Mad Casino — Bonus and Free-Spin Analysis
Mad Casino is positioned around promotional campaigns and free-spin offers. Free spins and deposit bonuses should be assessed as contractual offers, not free value. Non-GamStop casinos often advertise larger welcome bonuses and promotions than UK sites: the relevant details are wagering requirements, game contributions, stake restrictions, expiry dates and max-cashout rules.
A lower advertised bonus with simpler terms can be more practical than a large offer with restrictive wagering. Readers should also establish which payment methods are eligible for promotional participation.
Common gamstop casino bonuses include welcome offers, free spins, and no deposit bonuses, which let players try a casino without spending money. Reload bonuses usually add 50%-100% on later deposits, while cashback and bonus cash offers can return part of losses, often around 10%-15%.
Editorial view: Primarily relevant for readers comparing bonus terms rather than seeking a universal casino recommendation.
BetFoxx — Slots and Table-Game Focus
BetFoxx is positioned around slots, card games and fast-paced game mechanics. High-volatility games, feature-buy mechanics and multiplier formats can create substantial bankroll swings, so the user experience should be assessed alongside game rules and responsible gambling controls.
Payment-method claims should be checked in the operator’s live cashier and terms, as a method available for deposits may not be available for withdrawals.
Editorial view: Relevant to players comparing game categories, provided they assess volatility, table rules and banking conditions before playing.
FrostyBet — Privacy and Verification Claims
FrostyBet is marketed around privacy-oriented and crypto-led positioning. Privacy should not be confused with an absence of safeguards. An operator may still request identity, payment ownership or source-of-funds documents for a larger withdrawal, unusual activity, a bonus dispute or compliance review.
A transparent casino should identify the legal operator, licence, KYC circumstances, payment rules and responsible gambling controls. Any promise of “no verification ever” should be treated cautiously.
Editorial view: Relevant only where account-verification conditions, legal ownership and player-safety controls are clearly explained.
Slots Amigo — Casual Games and Bingo Positioning
Slots Amigo is positioned around slots, scratchcards, bingo-style games and mobile use. A casual-game proposition should still be evaluated through the same practical criteria as any other operator: game provider quality, terms, payment options, support, withdrawal rules and account controls.
Mobile presentation is useful only if the cashier, limits and support channels remain fully accessible rather than simplified or hidden.
Editorial view: A category-specific option for readers interested in mixed casual-game formats, subject to normal licence and payment checks.
Aztec Paradise — Theme-Led Casino and Loyalty Assessment
Aztec Paradise uses an adventure-style visual proposition alongside a broader casino library. Themes and loyalty messaging should be treated as secondary to the practical evaluation of operator information, game providers, loyalty terms, payment methods, verification policy and withdrawals.
Loyalty programmes can have separate terms involving point expiry, eligibility, wagering, tiers and withdrawal conditions. Those terms should be reviewed before a player treats rewards as part of the casino’s effective value.
Editorial view: A theme-led casino proposition that should be judged by transparent terms and payment reliability rather than design alone.
How We Score International Casino Sites
This page uses an editorial methodology rather than relying on the size of a welcome offer or the number of games displayed in a lobby.
| Assessment Area | Weight | Evidence Reviewed |
|---|---|---|
| Operator Transparency | 25% | Legal entity, licence details, terms, ownership information and complaints route |
| Banking and Withdrawals | 20% | Deposit methods, fees, limits, stated payout rules, payment eligibility and KYC policy |
| Games and Software | 15% | Providers, RTP visibility, game rules, table rules and live casino coverage |
| Bonus Terms | 15% | Wagering, game contribution, expiry, maximum bet and max-cashout clauses |
| Customer Support | 10% | Availability, clarity of written information and escalation process |
| Mobile Usability | 10% | Navigation, game performance, cashier access and account controls |
| Player Protection | 5% | Deposit limits, time-outs, account closure, self-exclusion and support signposting |
Scores are editorial opinions, not guarantees of future availability, legal status, payout performance or promotional value. A high bonus cannot compensate for unclear ownership, weak withdrawal rules or missing player-safety tools.
How We Review and Verify Claims
The analysis distinguishes between information published in an operator’s terms, features visible on the website, claims made in promotional material and details that require independent confirmation.
Where account access and testing are lawful and available, a review may examine published licence details, legal entity information, bonus conditions, cashier rules, game providers, mobile functionality and customer-support responses. Withdrawal observations, where documented, are not guarantees; processing can depend on verification, payment method, transaction limits, account history and network conditions.
If a claim about a casino’s licence, payout speed, payment option or UK availability cannot be independently confirmed, it should be presented as an operator claim rather than an established fact.
Licensing, UK Status and Operator Verification
A remote gambling operator generally requires a Gambling Commission licence if it provides gambling facilities to consumers in Great Britain. This can apply regardless of where the business itself is based. An international licence does not automatically mean that an operator is UKGC-regulated or authorised to accept consumers in Great Britain.
Before registering, check the casino footer and terms for:
- Legal company name
- Registered business address
- Licence number
- Licensing authority — casinos licensed by recognised regulators such as the Malta Gaming Authority or Gibraltar are generally stronger safety signals than vague or missing licence information
- Governing jurisdiction for the terms
- Restricted-country policy
- Account verification policy
- Withdrawal rules and limits
- Formal complaints route
- Responsible gambling and account-closure process
A licence logo alone is not enough. Recovering funds from unlicensed operators may be more difficult than from properly licensed ones. Where possible, the licence should be verified against the relevant regulator’s official register. If the casino does not clearly identify its legal operator, licence number or complaints process, that should be treated as a significant risk factor.
Payment Methods at International Casino Sites
Payment options can affect transaction speed, fees, privacy and withdrawal practicality. The most convenient deposit option is not automatically the most useful method for receiving a payout.
| Payment Method | Typical Deposit Speed | Withdrawal Suitability | Main Check |
|---|---|---|---|
| Debit Card | Usually instant | Varies by operator | The same card may not be available for cashouts |
| Bank Transfer | Hours to several business days | Often useful for larger withdrawals | Bank processing times, fees and beneficiary details |
| E-Wallet | Often instant | Often faster than a bank transfer | Region, account ownership and withdrawal eligibility |
| Bitcoin | Network-dependent | Common at crypto-focused operators | Irreversible transfers and variable network fees |
| Litecoin | Usually fast | Often practical for smaller crypto withdrawals | Minimum payout and correct wallet address |
| USDT / Stablecoins | Often fast | Network-specific | Correct blockchain network is essential |
| Payment Voucher | Usually instant | Often unavailable for payouts | Winnings may need to be withdrawn another way |
Instant deposits do not guarantee instant withdrawals. Players should confirm approval periods, KYC triggers, daily or monthly caps, bonus restrictions, fees and payment-method eligibility before funding an account.
Withdrawals, Verification and Account Checks
A low-friction registration process does not mean that verification will never be required. Identity, payment ownership or source-of-funds checks may be requested before a withdrawal is released, especially for larger amounts, unusual activity, bonus disputes or anti-fraud reviews.
| Withdrawal Check | Why It Matters |
|---|---|
| Minimum withdrawal | Avoids a balance falling below the cashout threshold |
| Maximum withdrawal | Shows whether larger amounts may be paid in stages |
| Internal approval period | Separates casino review time from bank or blockchain settlement |
| Payment-method rule | Confirms where winnings can be sent |
| KYC policy | Identifies when documents may be requested |
| Fees | Prevents unexpected deductions |
| Bonus restrictions | Shows whether promotional winnings have a maximum cashout |
| Pending withdrawal policy | Shows whether a request can be cancelled before processing |
If a payout is delayed, save screenshots, transaction IDs, terms and support messages. Ask for the exact policy or verification requirement affecting the withdrawal. Do not make further deposits in an attempt to resolve an outstanding payment issue.
Game Providers, RTP and Fair Play
Some non-GamStop casinos advertise thousands of slot games, but raw volume alone is not a quality signal. A platform may list extensive game libraries while providing limited information about software providers, game rules, RTP settings, table rules or live dealer studios.
A stronger game proposition should include recognised software providers, useful filtering, clear game categories, published RTP where available, accessible rules for hundreds of table games such as blackjack and roulette, transparent information on live casino games that may run 24/7, and stable mobile performance. It should also make it easy to find popular online slots without burying quality under volume.
Some operators also include niche formats such as crash games, Plinko, bingo, and scratchcards.
RTP is a long-term theoretical return across a large number of rounds. It is not a prediction of what an individual player will win in one session. Similarly, provably fair games may help verify the integrity of an outcome, but they do not remove the house edge or produce a positive expected return for the player. For non-live games, reputable casinos should also rely on audited Random Number Generators to support fair gaming.
New Non-GamStop Casinos vs Established Operators
A new international casino may offer a modern interface, aggressive introductory promotions, new games or alternative payment options. Novelty is not, however, a quality signal.
Established operators provide more history to analyse: changes in ownership, consistency of terms, payment conditions, complaints handling, support quality and product stability. New brands may have less evidence available to evaluate these areas.
If testing a new operator, a cautious approach is to use a small amount, read the terms, check the legal entity and make a modest withdrawal test before treating the platform as a regular option.
Bonus Terms: Measuring Effective Value
Welcome bonuses, free spins, reload offers, cashback, rakeback and loyalty rewards should be analysed as contractual offers. The stated bonus value is only one part of the calculation.
Before accepting a promotion, review:
- Minimum qualifying deposit
- Wagering requirement
- Eligible games and contribution rates
- Maximum permitted bet while using bonus funds
- Bonus expiry date
- Maximum withdrawal from bonus winnings
- Payment methods excluded from the offer
- Multiple-account and VPN restrictions
- Whether the offer applies to the relevant account type
A smaller bonus with lower wagering and fewer restrictions can be more useful than a large headline figure. Bonuses should add entertainment value, not encourage higher stakes, longer sessions or attempts to recover losses.
Mobile Experience and Account Controls
A credible mobile casino experience should provide fast loading, readable game information, secure cashier access, visible withdrawal controls, responsive support and direct access to limits, time-outs and account closure.
Before using a casino account through a phone, avoid public Wi-Fi for account or wallet transactions. Use a secure device lock, and protect any crypto wallet on the same device with separate authentication.
Mobile convenience should not reduce account control. Payment settings, support channels and responsible gambling tools should remain easy to find on smaller screens.
Complaints, Disputes and Delayed Withdrawals
An expert casino assessment must account for what happens when something goes wrong. This is particularly important for international operators, where complaint handling, governing law and consumer remedies may differ from UKGC-regulated businesses.
If you face a delayed withdrawal, account restriction, disputed bonus decision or payment issue:
- Save screenshots of the balance, transaction records, bonus terms and support chat.
- Contact customer support in writing and request a clear explanation.
- Ask for the exact clause, verification requirement or account rule used to make the decision.
- Use the operator’s formal internal complaints process if frontline support does not resolve the matter.
- Check the operator’s terms and licence information for a stated external dispute route.
- Do not create duplicate accounts, make further deposits or initiate a chargeback before documenting the issue.
A clear complaints process, accessible written terms and consistent communication are stronger trust signals than a large welcome bonus.
Responsible Gambling
Non-GamStop information should never be used to encourage someone to bypass an active self-exclusion. GAMSTOP - is a free national self-exclusion service for people in the UK, covering gambling websites and apps operated by licensed gambling businesses.
If you have registered with GAMSTOP, are trying to stop gambling, are borrowing money to gamble, feel pressure to recover losses or find gambling difficult to control, do not open an account with another operator. Take a complete break and seek confidential support.
Before gambling, set:
- A fixed budget that you can afford to lose
- A maximum session length
- A loss limit
- A cooling-off period after substantial losses
- A rule not to use credit, borrowed money or essential living funds
- A rule not to chase losses with larger deposits or stakes
UK Support Resources
If gambling is affecting your finances, wellbeing, work, relationships or ability to stay in control, the following services provide free and confidential support:
- GAMSTOP - — A free national self-exclusion service for people in the UK. It blocks access to gambling websites and apps operated by licensed gambling businesses. Registration is completed online.
- GamCare - — Provides information, one-to-one advice, live chat, peer support and referrals to treatment services for anyone affected by gambling harm. Use GamCare’s support service - Get support talk to us now or call 0808 8020 133.
- National Gambling Helpline - Get support talk to us now — Free and confidential support for people affected by gambling. The helpline is operated by GamCare and is available 24 hours a day, 7 days a week on 0808 8020 133.
- GambleAware - — Offers gambling-harm information, self-help tools and a service finder - Tools and support support in your area for confidential support in Great Britain.
- NHS Gambling Addiction Support - Live well addiction support gambling addiction — NHS guidance on gambling-related harm, treatment options and organisations that can provide practical support.
- Gamblers Anonymous UK - — Peer-led recovery meetings for people seeking to stop gambling. Call 0330 094 0322 to find meetings and support options.
- Samaritans - How we can help contact samaritan — Provides immediate emotional support for anyone who is distressed, overwhelmed or at risk. Call 116 123 free of charge, 24 hours a day, 7 days a week.
Support is also available for partners, friends and family members affected by someone else’s gambling. Asking for help early is a practical step towards regaining control.
If you are in immediate danger, feel unable to keep yourself safe or are at risk of self-harm, call 999 in an emergency or contact Samaritans - How we can help contact samaritan on 116 123.
Frequently Asked Questions
Are non-GamStop casinos legal for UK residents?
The legal and regulatory position depends on the operator, its licence, where it is established and whether it is authorised to provide gambling facilities to consumers in Great Britain. An overseas licence does not automatically mean that an operator is licensed by the UK Gambling Commission.
Before registering, check the legal company name, licence information, restricted-country policy and current terms. Do not assume that an international casino is UK-regulated or authorised to accept customers in Great Britain.
Does non-GamStop mean no verification?
No. A casino may ask for identity, payment ownership or source-of-funds documents before processing a withdrawal or when it identifies a compliance, bonus-abuse or fraud risk.
Why can an international casino delay a withdrawal?
Delays can arise from pending periods, verification checks, payment-method rules, withdrawal caps, bonus restrictions, internal transaction reviews or blockchain congestion. Check the terms before depositing.
How can I check whether a casino is UKGC-licensed?
Use the Gambling Commission’s public register and search for the legal company name or licence number. Do not rely only on a logo displayed in the website footer.
Can GAMSTOP block non-GamStop casinos?
GAMSTOP covers gambling websites and apps operated by licensed gambling businesses in the UK. It does not guarantee blocking access to every international website. If you need broader protection, consider device-level blocking tools and seek support from GamCare or GambleAware.
Are crypto payments available at international casino sites?
Some sites advertise Bitcoin, Litecoin, USDT and other cryptocurrencies. Crypto payments can be quick, but they are generally irreversible and can involve network fees, price volatility, wallet-address risk and account-verification requirements.
Editorial Independence and Updates
This page is an analytical comparison. Rankings reflect the methodology described above and should not be read as guarantees of current availability, legal status, payment performance or future promotional value.
Where affiliate relationships apply, they should be disclosed clearly and must not determine an operator’s score. A casino should not improve its editorial rating because it offers a higher commission, a short-term promotion or preferential commercial terms.
Reviews should be updated when there is a material change in:
- Legal operator or ownership
- Licence status or jurisdiction
- UK access or restricted-country policy
- Withdrawal terms, fees or limits
- Verification requirements
- Major bonus rules
- Game providers or mobile functionality
- Responsible gambling tools or complaint procedures
Each individual casino review should show a visible “Last checked” date and identify the author or editorial reviewer responsible for the assessment.
Final Verdict
The international non-GamStop casino market should not be evaluated through bonus size alone. A meaningful comparison weighs operator transparency, licensing information, game quality, payment methods, and players should look for SSL encryption to protect personal and transaction data, withdrawal terms, account verification, complaints handling and responsible gambling controls. This is also the baseline for judging whether non gamstop casinos safe is a reasonable conclusion rather than a marketing claim.
| Casino | Editorial Position | Why It Is Included |
|---|---|---|
| MyStake | Broad product proposition | Relevant for game depth and combined casino/sportsbook analysis |
| Donbet | Banking and multi-product model | Relevant for withdrawal, payment and verification comparison |
| Goldenbet | General-purpose offering | Relevant for broad casino and promotional analysis |
| Rolletto | Crypto-oriented comparison | Relevant for blockchain banking and account-condition assessment |
| Velobet | Promotion and mobile comparison | Relevant for welcome-package and mobile-cashier analysis |
| Mad Casino | Bonus-terms comparison | Relevant for free-spin and promotion analysis |
| BetFoxx | Game-category comparison | Relevant for slot and table-game assessment |
| FrostyBet | Privacy and KYC comparison | Relevant for verification and crypto-policy analysis |
| Slots Amigo | Casual-game comparison | Relevant for bingo, slots and mobile-use assessment |
| Aztec Paradise | Loyalty and theme-led comparison | Relevant for operator transparency and loyalty-term analysis |
The strongest approach is to compare the complete proposition, verify the operator’s current terms and avoid treating a large bonus, a fast-deposit claim or a long game list as proof of trustworthiness. Basic checks such as operator verification and SSL encryption help separate trustworthy casinos from weaker options, since SSL encryption protects player data during transactions at casinos. If gambling is difficult to control or you are currently self-excluded, the safest decision is not to register with another operator.
