SisterCasinoUK
Know who runs your casino
Many UK casinos are brands of the same company. We trace each one to its licence holder on the Gambling Commission register, so you can see which sites share an owner, a bonus policy and a complaints process before you sign up.
- Sister-site guides
- 244
- Casinos listed
- 55
- Last updated
- 3 Nov 2026
Two casinos are sister sites when one licensed company runs both. The name, design and welcome offer differ. The owner, the account rules and the complaints process usually don’t.
Some casinos pay us a commission when you open an account through our links. That can decide which casinos we feature. It never changes the owner, licence or terms we report. Read our full affiliate disclosure.
Which UK Sister Sites Can You Compare Here?
Start with the casino you already use. Each guide names the company behind it, lists the brands that share its licence and explains what that means for your account.
MrQ
MrQ sister sites
Mr Vegas
Mr Vegas sister sites
Midnite
Midnite sister sites
The Sun Vegas
The Sun Vegas sister sites
Fabulous Bingo
Fabulous Bingo sister sites
Dream Jackpot
Dream Jackpot sister sites
Winomania
Winomania sister sites
Every brand above held an active Gambling Commission licence when we last checked it on 15 October 2026.
Before you compare offers: set a deposit limit at any casino before you claim a bonus. Every UK-licensed casino has to offer one.
How Do These UK Sister Sites Compare Right Now?
The 7 brands above, side by side. Each offer is shown with its wagering, because the headline figure alone says little about what you can withdraw.
| Casino | Welcome offer | Withdrawals | Read first | Visit |
|---|---|---|---|---|
|
MrQTek Fox Ltd · 60629
|
100 free spins on Big Bass Splash when you deposit £10 or moreNo wagering, winnings uncapped | Most processed instantly, otherwise up to 2 working days | You have to use the spins within 48 hours. Players in Northern Ireland are excluded. | Visit site 18+ · T&Cs apply |
|
Mr VegasVideoslots Limited · 39380
|
100% first deposit bonus up to £50, plus 11 free spins10x the bonus, released in 10% steps | Aims to process within 48 hours of receiving your documents, with no guarantee | Bets are capped at £20 or half the bonus, whichever is lower. Its promotions page still shows an older 35x offer, so go by the UK terms page. | Visit site 18+ · T&Cs apply |
|
MidniteMidnite Limited · 101839
|
Bet £20, get 100 free spins on Big Bass Splash (code BETGETCASINO)Not stated for spin winnings, so assume wagering applies until Midnite confirms | Most within minutes, aims for 72 hours, some up to 5 working days | You have to wager the £20 within 14 days of signing up, and the spins expire 7 days after they arrive. | Visit site 18+ · T&Cs apply |
|
The Sun VegasRed Rock Managed Services Limited · 67754
|
100% of your first deposit up to £100, plus 100 free spins10x the bonus and 10x spin winnings, within 3 days | Completed on its side within 24 hours, then up to 3 working days by card | Debit cards only. Neteller, Skrill and PayPal deposits don’t qualify. | Visit site 18+ · T&Cs apply |
|
Fabulous BingoRed Rock Managed Services Limited · 67754
|
The welcome offer we checked ended on 31 October 2026. See Fabulous Bingo for the current one. | Completed on its side within 24 hours, then up to 3 working days by card | Debit cards only for deposits. | Visit site 18+ · T&Cs apply |
|
Dream JackpotJupiter Gaming Limited · 67098
|
Deposit £20 and wager £20 for 20 free spins on Big Bass SplashNo wagering on spin winnings | Not stated by Dream Jackpot. Test with a small withdrawal first. | Claim the spins within 7 days. Withdraw your deposit unplayed and you lose them. One offer per household. | Visit site 18+ · T&Cs apply |
|
WinomaniaAnakatech Interactive Limited · 48789
|
100% first deposit bonus up to £50, plus 50 spins on Big Bass Splash (code WINO100)10x the bonus and 10x spin winnings, within 2 days | Not stated by Winomania. Test with a small withdrawal first. | Cash-out is capped at 3x the bonus, and at £50 from the spins. Maximum bet £1. | Visit site 18+ · T&Cs apply |
Every row checked on 15 October 2026 against the Gambling Commission register and each casino’s own terms. New customers only. Terms change often, so check them on the casino’s site before you deposit.
What Is a Casino Sister Site?
A sister site is a casino run by the same company as another casino. In Great Britain the Gambling Commission licenses the company, not the brand, so every casino that company runs trades under one licence. The logo changes. The business holding your money doesn’t.
Shared software is a different thing. Many unrelated casinos run on the same white-label platform or carry the same games, and that says nothing about who owns them or who handles your complaint. On SisterCasinoUK a brand only counts as a sister site when the licence record links it to the same operator.
What Carries Over When You Join a Sister Site?
A new brand can feel like a fresh start. With a sister site, several things can follow you across from the casino you already use.
Your welcome bonus
Many groups allow only one welcome offer per person or household across all brands. Taking it at one site can rule you out at the rest.
Your self-exclusion
An exclusion at one brand may cover every brand on the licence. Check the terms, and ask in writing if they’re unclear.
Your documents
Some groups share verification across brands. Others make you start again, so keep your ID and proof of address ready.
Your complaint
The same company handles it, no matter which brand you started with, and the same dispute service usually applies.
Your limits
Deposit limits are often set brand by brand. A limit at one site doesn’t always follow you to the next.
Before you open a second account, search the casino’s terms for “group”, “affiliated” and “same management”. Those clauses tell you what comes with you.
Is a Bigger Welcome Bonus at a Sister Site Worth It?
Not always. Since 19 January 2026, casinos licensed in Great Britain can’t set wagering above 10x the bonus. That cap helps, but the sum still matters more than the headline figure.
Take a £50 bonus with 10x wagering. You’d need to bet £500 before you can withdraw any of it. A £20 bonus with no wagering lets you withdraw £20 straight away. The smaller offer is often the better deal.
Stake limits apply during wagering too. On online slots, you can’t bet more than £5 a spin if you’re 25 or older, or £2 if you’re 18 to 24. Check the wagering and the maximum win before you look at the headline figure.
How Can You Check Who Runs a Casino?
Find the footer details
Scroll to the casino’s footer. Find the company name and the Gambling Commission account number.
Search the register
Search that account number on the Gambling Commission public register.
Check the status
Open the licence entry. Confirm the status reads active.
Read the trading names
Read the list of trading names and domains. Every brand listed there is a sister site.
Compare with the terms
Compare the company in the casino’s terms with the register. If the 2 differ, ask live chat which company holds your account and save the transcript.
Casino Sister Sites by Operator
A network is a group of brands run by one licensed company. Here’s who runs each UK brand we compare, with the account number to check on the Gambling Commission register.
Gamesys Operations Limited
UKGC account 38905Jackpotjoy, Bally Casino and Double Bubble Bingo, plus white-label sites such as Virgin Games and Monopoly Casino.
Red Rock Managed Services
UKGC account 67754The Sun Vegas, Fabulous Bingo, Sun Bingo and Fabulous Vegas. Took over from VF2011 Limited in March 2026.
Skill On Net Limited
UKGC account 39326PlayOJO and more than 50 other trading names, including Slingo, Spin Genie and Swift Casino.
Jupiter Gaming Limited
UKGC account 67098Dream Jackpot, alongside 666 Casino, King Casino, Lad Casino and Red Casino.
Anakatech Interactive Limited
UKGC account 48789Winomania and Lucky Mate, plus white-label brands such as 7Bet and BetCrown.
Midnite Limited
UKGC account 101839Midnite only. It took the brand over from Dribble Media Limited in August 2026.
What Can You Do If a Sister Site Won’t Pay You?
First, raise a formal complaint with the operator. Use its complaints procedure, not only live chat. Keep every email and chat transcript.
The operator has 8 weeks to resolve the complaint. If it has not, or you disagree with its final response, take it to the alternative dispute resolution (ADR) provider named in its terms, for example, IBAS. ADR is free for players.
Check the licence before you deposit. These protections apply only to casinos licensed by the Gambling Commission.
Can You Use a Sister Site If You’ve Self-Excluded?
No, and we wouldn’t want you to try. GAMSTOP covers every online casino licensed in Great Britain, so a GAMSTOP exclusion blocks the sister sites as well as the brand you started with.
If you’ve excluded only one brand, ask the operator in writing whether the exclusion covers every brand on its licence. If you’re unsure, register with GAMSTOP as well. It’s free. You can also block gambling payments in most UK banking apps, and blocking software stops access on your devices.
If gambling is causing you problems, call the National Gambling Helpline on 0808 8020 133. It’s free and open 24 hours a day.
How Do We Research Each Casino?
Everything on SisterCasinoUK comes from public records and the casinos’ own published terms. We don’t score casinos, and we don’t open funded accounts to test them.
The licence record first
Every guide starts with the Gambling Commission public register: the company, its account number, its status and the trading names it lists.
Company details
Companies House and the casino’s own footer and terms confirm which business holds your account.
The casino’s own terms
Bonus terms, withdrawal rules and verification clauses come from the operator’s published pages, quoted as written.
Group rules that carry over
We look for one-bonus-per-household clauses, shared self-exclusion and shared verification, because those follow you between brands.
Complaint routes
Each guide names the dispute service in the operator’s terms, so you know where to go if a complaint stalls.
A date on every page
Pages show when they were last updated. Offers and terms change often, so check the casino’s live terms before you deposit.
The full process, sources included, is on our How We Research page.
What SisterCasinoUK Won’t Do
A guide about your money should be plain about its limits. These are ours.
No scores or star ratings
We report ownership, licences and terms. We don’t turn them into a number, because a score can’t show what matters for your account.
No paid facts
Commission can decide which casinos we feature. It can’t buy a different owner, licence status or quoted term.
No invented testing
We don’t claim deposits, withdrawals or play sessions we didn’t make. Payout times come from the operator’s own terms.
No made-up reviewers
Guides are published by SisterCasinoUK Editorial. They’re researched from public sources and drafted with the help of AI tools.
No way around self-exclusion
We never present a sister site as a route back after you’ve excluded yourself. GAMSTOP covers every GB-licensed online casino.
Corrections when we’re wrong
Email info@sistercasinouk.com with the page and the detail. We check it against the source and fix it.
Who Is Behind SisterCasinoUK?
18+18+ only. Gambling can be addictive. Set a deposit limit before you play, and take breaks. For free, confidential support, call the National Gambling Helpline on 0808 8020 133 or visit GamCare. To block every UK-licensed gambling site at once, register with GAMSTOP.
Frequently Asked Questions
What are casino sister sites?
They’re casinos run by the same licensed company. Each brand has its own name, design and welcome offer, but the same business holds your account, sets many of the rules and handles your complaints. The Gambling Commission register lists every brand a company runs.
Are sister sites safer than other casinos?
No safer and no riskier by default. A sister site is only as reliable as the operator behind it. Check the operator’s licence, withdrawal terms, and complaint record, rather than trusting a brand because you liked its sister.
Can I claim a welcome bonus at every sister site?
Often you can’t. Many groups allow one welcome offer per person or household across all their brands. Search the terms for “group” or “affiliated” before you deposit, or ask live chat and keep the answer in writing.
Does self-exclusion at one casino cover its sister sites?
It may, depending on the operator. Ask in writing whether your exclusion covers every brand on the licence. A GAMSTOP registration covers all of them, along with every other online casino licensed in Great Britain.
How do I find out who owns a casino?
Look for the company name and account number in the casino’s footer. Search the number on the Gambling Commission public register. The entry lists the licence status and every trading name the company uses.
Who writes SisterCasinoUK?
SisterCasinoUK Editorial. Guides are researched from the Gambling Commission register, Companies House and the casinos’ own terms, and drafted with the help of AI tools. We don’t claim real-money testing, and every page shows when it was last updated.
Why do casino groups run several brands?
Different brands reach different players, with their own themes, games and offers. Running them on one licence and one platform lets the company share costs. For you, it means the choice looks wider than it really is.