Casumo
Welcome offer
50% deposit match up to £100 or 100% up to £100 + 50 spins
- Withdrawal
- 0–24h
- Payout
- 100%
- Min deposit
- €20
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 50 free spins
- 50% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
Updated 9 October 2026
Casino Sister Sites UK
Sister sites are casinos run by the same company under the same licence. SisterSpy traces each casino to its licence holder, lists every brand we found for that company and shows the evidence, so you know the whole family before you sign up.
- 7 sister-site guides
- 20 brands traced
- 3 licence holders
October 2026
Top-rated UK casinos
UK-licensed casinos we rate highest this month. Each card links to that casino's sister sites.
We may earn a commission if you join a casino through our links. Advertising disclosure. 18+ only.
1 2 Betway
Welcome offer
150 Free Spins on £20 Deposit
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 150 free spins
- 30% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
3 Mr Green
Welcome offer
200 Free Spins on £10 Deposit
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 200 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
4 888 Casino
Welcome offer
100% Up to £100 + 100 Free Spins
- Withdrawal
- 0–24 hrs
- Payout
- 97%
- Min deposit
- €9
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 100 free spins
- N/A cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
5 William Hill
Welcome offer
200 Free Spins on £10 Deposit
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 200 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
6 Betfred Casino
Welcome offer
Up to 200 Free Spins on £10 Deposit
- Withdrawal
- 0–3 hrs
- Payout
- 94%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 200 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
7 Paddy Power
Welcome offer
60 Free Spins No Deposit + 200 Free Spins
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 260 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
8 PokerStars Casino
Welcome offer
100% Up to £500 + 50 Free Spins
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €19
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 50 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
9 BetVictor
Welcome offer
£20 Bonus + 50 Free Spins on £10
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 50 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
10 Sky Vegas
Welcome offer
50 Free Spins No Deposit + 200 Free Spins
- Withdrawal
- 0–24 hrs
- Payout
- 94%
- Min deposit
- €9
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 250 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
11 BetMGM UK
Welcome offer
200 Free Spins on £10 Deposit
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 200 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
12 Coral Casino
Welcome offer
100 Free Spins on £10 Deposit
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 100 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
13 PlayOJO
Welcome offer
80 Free Spins No Wagering
- Withdrawal
- 0–24 hrs
- Payout
- 96%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 80 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
14 Unibet
Welcome offer
200 Free Spins on £10 Deposit
- Withdrawal
- 0–12 hrs
- Payout
- 95%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 200 free spins
- 10% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
15 Jackpotjoy
Welcome offer
50 Free Spins on £10 Deposit
- Withdrawal
- 0–24 hrs
- Payout
- 95%
- Min deposit
- €10
- Status
- Verified
- Mastercard
- Apple Pay
- Visa
- 50 free spins
- 20% cashback
18+ · New players only · T&Cs apply · BeGambleAware.org
Sister-site guides
Latest sister site guides
Each guide names the licence holder, proves every sister from the regulator's record and compares offers, payments and complaint records side by side.
-
Cosmobet Sister Sites
- Run by
- Santeda International B.V.
- Licence
- Curaçao
- Genuine sisters
- 4 found
Updated 9 October 2026 · Andrew Swelstad
-
Zizobet Sister Sites
- Run by
- Santeda International B.V.
- Licence
- Curaçao
- Genuine sisters
- 4 found
Updated 9 October 2026 · Andrew Swelstad
-
Ladbrokes Sister Sites
- Run by
- LC International Limited
- Licence
- UK Gambling Commission account 54743
- Genuine sisters
- 11 found
Updated 8 October 2026 · Samantha Yermian
-
MyStake Sister Sites
- Run by
- GTW B.V.
- Licence
- Curaçao
- Genuine sisters
- 2 found
Updated 8 October 2026 · Andrew Swelstad
-
Rolletto Sister Sites
- Run by
- Santeda International B.V.
- Licence
- Curaçao
- Genuine sisters
- 4 found
Updated 8 October 2026 · Andrew Swelstad
-
Velobet Sister Sites
- Run by
- Santeda International B.V.
- Licence
- Curaçao
- Genuine sisters
- 4 found
Updated 8 October 2026 · Andrew Swelstad
Every guide follows the same rulebook, so you can compare one family with another. Each one names the company behind the casino and proves it from the regulator's record, lists every brand and domain we found on that licence, and profiles five casinos: genuine sisters first, then clearly labelled alternatives. Tables then set the offers, wagering, payment limits, game libraries, licence status and complaint records side by side, each dated. Every guide also sets out practical steps for switching between sister sites and the responsible-gambling tools each operator offers, because limits rarely travel from one brand to another.
Casino families
Casino families we've mapped
A casino family is every brand one licence holder runs. These are the families behind our guides so far, with each brand we found on their licences.
-
UK-licensed
LC International Limited
UK Gambling Commission account 54743, remote licence 054743-R-330863-015
12 brands we found: Ladbrokes, Coral, PartyCasino, Foxy Bingo, Gala Casino, bwin, Gala Bingo, Gala Spins, Foxy Games, PartyPoker, Sportingbet, Gamebookers
-
Licensed outside the UK
Santeda International B.V.
Curaçao, OGL/2024/1798/1048
5 brands we found: Cosmobet, Velobet, Zizobet, Goldenbet, Rolletto
-
Licensed outside the UK
GTW B.V.
Curaçao, OGL/2024/250/0115
A family can be larger than it looks. One licence often covers many domains: the Curaçao regulator certified mystake.com and nine mirror domains to GTW B.V., and 11 domains we found across Santeda International B.V.'s five brands (7–9 October 2026). In the UK, the Gambling Commission's register lists 15 domains under LC International Limited's account (7 October 2026). A mirror domain is the same casino under another address, not a sister site, so our family tables list mirrors under their brand.
Before you sign up
Why casino sister sites matter
Two casinos with different names, colours and welcome offers can be the same business underneath. When one company holds the licence for both, the same people decide how complaints are handled, how verification works and when a withdrawal is paid. Knowing the family tells you what you are really signing up to.
Complaints and how they end
The licence holder answers for every brand it runs. A pattern of slow payouts or confiscated winnings at one brand often reflects the operator's policies rather than the brand's, so it tends to repeat across the family. That is why our guides compare complaint records brand by brand, with the date each figure was read.
Bonuses and who can claim them
Sister sites often run similar welcome offers with different headline numbers. The wagering, the time you get to clear it, the maximum bet and the cap on winnings are where they differ, and those details decide what a bonus is worth. Some families also limit welcome offers to one per person across several of their brands, so read each casino's bonus terms before a second deposit.
Accounts, limits and verification
Each brand usually keeps its own account. Moving to a sister site means a new registration, fresh verification and a new set of limits, and the balance, loyalty level and points you built up stay behind. At the UK-licensed Ladbrokes family, for example, limits a player sets at one brand don't carry over to the others, as our Ladbrokes sister sites guide explains.
Payments and payout rules
Sister sites often share a payment agent and some withdrawal rules, but not all of them. MyStake and Donbet name the same payment agent, CYGTW LTD, in their footers (Donbet's in August 2026), while the five Santeda brands set different minimum withdrawals and different clauses on deposits that were never wagered. Caps on big wins matter too: MyStake's terms (6 October 2026) limit the win from any single bet or spin to €100,000 and let it pay wins above €15,000 in monthly instalments. Our guides show which rules are shared and which are not.
Games and studios
Sister sites often draw on the same game studios, but their lobbies are not copies. Donbet used 106 studios against MyStake's 83 on Casino Guru's count (5 October 2026), and the Santeda brands' lobby counts differ at each brand (8–9 October 2026). If a particular studio or live casino matters to you, check the brand, not just the family.
Self-exclusion
A self-exclusion at one brand does not always reach its sisters. Some operators close every account a player holds across their brands on request; others act brand by brand. The UK's national online self-exclusion scheme covers every UK-licensed online casino, but no casino licensed outside the UK, which makes the family question more important there. Our guide to self-exclusion across sister sites sets out the options.
Our method
How we prove a casino sister site
Every sister-site link on SisterSpy rests on a record we can point to. This is desk research: we don't open accounts, deposit or claim to have played.
Start with the licence
We read the regulator's record for the licence: the certificate for each domain and the licence register. Every domain on that licence goes into the family table, with its status.
Match the casino's own words
We compare that record with the casino's footer, terms and About page: the company name, its number and the payment agent. Where both can be read, they must name the same licence holder.
Label everything else
A shared design, game lobby, payment provider or press story never makes two casinos sisters on its own. Casinos that only look related appear as alternatives, and we say so.
Date it and say what is missing
Every offer, count and score carries the date we saw it. When a casino's pages disagree we show both versions, and anything we couldn't confirm is labelled unconfirmed.
The full method, with the sources we use and the ones we don't, is in how we link casinos. To check a casino yourself, follow our guide on how to check who owns a casino.
Find your fit
Pick a sister site by what you want
Brands in one family share a licence holder but not their offers. Here is where our guides found the clearest differences, with the date each was seen.
More time to clear a bonus
Velobet gives you 30 days to clear its welcome offer; Zizobet gives five, at the same 30x the deposit plus bonus (9 October 2026). The Zizobet sister sites guide sets the whole family side by side.
Cashback you can withdraw
MyStake paid its 10% monthly crypto cashback with no wagering, where Cosmobet's carried 30x (5–6 October 2026). Our MyStake sister sites guide compares the rest of the family.
Free spins with no wagering
PartyCasino gave 200 free spins with no wagering for a qualifying first deposit and £10 staked on selected slots (7 October 2026). It sits in the Ladbrokes family, covered in our Ladbrokes sister sites guide.
Sport and bet-editing tools
Zizobet's Total Bet Control lets you drop a leg from a placed bet before its event starts, for a fee (9 October 2026). The Velobet sister sites guide compares it with its stablemates.
Bingo from a UK brand
Foxy Bingo and Gala Bingo share Ladbrokes' licence holder, LC International Limited, and its UK licence (7 October 2026). The Ladbrokes family page lists all twelve brands.
A casino with fairer terms
Cosmobet's terms carry no 20% deduction on deposits that were never wagered, a clause Velobet, Zizobet and Rolletto keep, but let it cancel such a withdrawal instead, and its own rules disagree on the spin-winnings cap (9 October 2026). See the Cosmobet sister sites guide.
UK players
UK-licensed casinos and the rest: what changes
Many sister-site families hold no UK licence at all. That changes the rules a UK player can rely on, often more than the offer itself. Casinos licensed by the UK Gambling Commission have to follow its rules on bonuses, verification, payments and self-exclusion; casinos licensed elsewhere follow their own regulator's rules, which are usually lighter.
| Area | UK-licensed casino | Casino licensed outside the UK |
|---|---|---|
| Regulator | UK Gambling Commission | The licensing regulator abroad, such as the Curaçao Gaming Authority |
| Bonus wagering | Capped at 10 times the bonus since 19 January 2026 | Set by each casino; casino welcomes we read asked 30x to 45x the deposit plus bonus (5–9 October 2026) |
| Self-exclusion | The UK's national online self-exclusion scheme blocks every UK-licensed site at once | Not covered by the national scheme; each casino we read runs its own |
| Disputes | An independent dispute service approved by the regulator | The casino first, then whatever body its terms name, usually abroad |
| Payments | No credit cards since April 2020 | Cards, e-wallets and often crypto |
| Age and ID checks | Before you can gamble | Often at the first withdrawal |
None of this makes every casino licensed outside the UK a bad choice, and it doesn't make every UK-licensed casino a good one. It does mean a UK player gives up protections at the door, and that a sister site's licence matters as much as its offer. Each of our guides explains what its family's licence means for a UK player.
If you still choose a casino licensed outside the UK, four checks take a few minutes. Find the company and licence number in the footer, then open the regulator's certificate for that exact domain. Read the terms on disputes to see where a complaint would go. Read the withdrawal limits and the bonus wagering before you claim anything. And complete your verification early, because a first withdrawal is when many casinos ask for documents.
Warning signs
Red flags across a casino family
Most problems with a casino are problems with its operator, so they show up across the family. These are the patterns our research keeps finding.
Fees on idle accounts
Some terms let a casino charge you for leaving money in an account. Velobet's and Rolletto's terms allow a monthly fee of 20% of the balance after 60 days without a login (8–9 October 2026). Withdraw what you don't plan to use before you move to a sister site.
The same complaint across brands
When one complaint keeps coming back, it usually comes from the operator rather than the brand. On 6 October 2026, six of the first ten complaints Casino Guru listed for Rolletto involved confiscated winnings or balances, as did six of Cosmobet's. The Rolletto sister sites guide compares the family's records.
Licence records that disagree
A casino's certificate and its regulator's register should tell the same story. For GTW B.V. and Santeda International B.V., the domain certificates read "Active" (7–9 October 2026) while the Curaçao register's 2 October 2026 edition lists the licences as "Assessment in progress". We show both, never one.
Terms that contradict themselves
TrustStake's offer pages ask 35x wagering while the welcome section of its terms says 45x, and Cosmobet's own rules give two different caps on free-spin winnings (9 October 2026). When terms disagree, ask support which one applies before you deposit, and keep a copy of the answer.
Domains that only borrow the name
A casino's name on a domain is not proof of who runs it. mystake.eu names a different company, TG-One Limited of Belize, and no licence (6 October 2026). We have also found a site that copies a casino's name and look while naming no operator or licence at all (9 October 2026). Check the footer against the regulator's record before you deposit.
Action by regulators abroad
Australia's media regulator warned Santeda International B.V. on 27 January 2026 as a provider of the MyStake service, and Sweden's gambling regulator ordered it to stop offering gambling there without a licence in June 2024. Findings like these concern the operator, not just one of its brands.
Our authors
Who writes SisterSpy
Two writers research and write every guide. Each page names its author and the date its facts were checked.
Andrew Swelstad
Andrew has spent eight years writing casino reviews and sister-site comparisons. At SisterSpy he maps the casino families licensed in Curaçao and Anjouan, tracing each brand to the company and licence behind it.
Samantha Yermian
Samantha worked as a journalist for several years before moving into casino reviews three years ago. At SisterSpy she covers UK-licensed casino groups, safer gambling and how to check who really owns a casino.
Responsible gambling
Play safely across every sister site
Gambling should be entertainment, never a way to make money. Set a deposit limit before you start, play only with money you can afford to lose and never chase losses. Take a break when you notice you are playing longer or staking more than you planned.
Watch for the signs that play is no longer fun: depositing again to win back a loss, playing for longer than you planned, hiding how much you spend or borrowing to play. Any one of them is a reason to stop and set a firmer limit, or to take a longer break.
Limits and time-outs are usually set brand by brand, so a limit at one casino does not protect you at its sisters. If you move to a sister site, set your limits again on the new account before your first deposit. If gambling stops being fun, take a time out or self-exclude, and talk to someone: the National Gambling Helpline is free and confidential on 0808 8020 133 (England and Scotland) or 0808 2819 265 (Wales). Our responsible gambling page lists the tools and where to find support.
FAQ
Casino sister sites: common questions
What is a casino sister site?
A casino run by the same company, under the same licence, as another casino. The brands look different and may have different offers, but the same licence holder answers for all of them, so its rules, complaint handling and regulatory record usually carry across.
How does SisterSpy confirm that two casinos are sisters?
We need primary evidence: the regulator's certificate or licence register naming the same licence holder, or the casinos' own footers and terms naming the same company. A shared design, platform or game lobby is not enough, so look-alike casinos are labelled as alternatives.
Can I claim a welcome bonus at more than one sister site?
It depends on the family. Some operators allow one welcome offer per person across several of their brands; others treat each brand separately. Read the bonus terms at each casino before you deposit, because a second claim can be refused or reversed.
Are sister sites equally safe?
Not necessarily. Sister sites share a licence holder, but their terms, complaint records and even their licence status can differ by brand and by domain. A well-known sister does not make a smaller brand safe. Check each site's licence and terms before you play.
Does self-exclusion at one casino cover its sister sites?
Not automatically. Some operators extend a self-exclusion to every brand they run, others don't. The UK's national online self-exclusion scheme blocks every UK-licensed online casino at once, but it does not cover casinos licensed outside the UK.
Do sister sites share accounts or balances?
Usually not. Each brand normally keeps its own account, balance, loyalty level and limits, so a move to a sister site means a new account and new verification. Limits you set at one brand rarely apply at its sisters, so set them again.
Why do unrelated casinos look the same?
Many casinos rent the same website platform, game lobby and payment providers. A platform supplier can power more than a hundred brands for more than one operator, which is why a similar look proves nothing about who runs a casino.
What changes when a casino has no UK licence?
The UK's rules stop applying. Bonus wagering is not capped at 10 times the bonus, the national self-exclusion scheme does not cover the site, and disputes go to the casino and its regulator abroad rather than to a UK dispute service.
Is a mirror site the same as a sister site?
No. A mirror is the same casino under another address, run by the same company with the same account, terms and offers. A sister site is a separate brand run by the same licence holder. We list mirrors under their brand and count only separate brands as sisters.
Why do some guides include casinos that are not sisters?
Each guide profiles five casinos. When a family has fewer than five provable sisters, we fill the remaining places with alternatives of the same licence type, chosen for something a player of that casino uses, and label each one clearly as an alternative.
How often is SisterSpy updated?
Each guide shows the date its facts were last checked, and every offer and figure carries the date we saw it. We re-check a family when we update its page, and we label anything we could not confirm.