What makes two casinos sister sites?
Sister sites have a business connection, usually through an operating company or a wider ownership group. The useful question is what that connection changes for you. It might explain a familiar cashier or support process, but it does not, by itself, establish a shared balance, password or welcome offer.
Start with the casino you already use rather than the longest list of alternatives. The directory above covers twenty brands, including MRQ, Virgin Games and MyStake. Each name leads to its own comparison. A reported connection needs closer inspection than a matching operating-company disclosure; neither label tells you that every account condition is identical.
How to check who operates a casino in the UK
Open the casino’s footer and terms, and find the company responsible for the account. Then follow its licence reference to the regulator’s register. Match the company name, the type of licensed activity and the website address where that information is listed. A badge alone is not enough: an unrelated website can copy an image.
Virgin Games and Jackpotjoy name Gamesys Operations Limited. Its Gambling Commission account is 38905, and the register lists an active remote casino licence. The Gamesys network guide explains that operating connection and the account questions it leaves open.
Gamesys Operations Limited: licence verified on the regulator’s website, September 2026.
Keep the operator separate from the company selling games or supplying software. The Jumpman Gaming comparison is useful here: a platform can bring differently branded sites together without making their promotions interchangeable.
The clues that matter when comparing sister casinos
| What you find | What it establishes |
|---|---|
| The same named operator | A documented operating connection; account access still needs checking. |
| The same slot titles | A shared game supplier, which can serve unrelated casinos. |
| A group-wide offer clause | The brands or earlier memberships relevant to that promotion. |
| An account-transfer notice | The particular arrangements stated for the affected account. |
Can an existing player claim a sister-site welcome bonus?
Sometimes the restriction covers one brand; sometimes it names a wider group. Read the receiving offer’s eligibility clause before making a qualifying deposit. Look for references to previous customers, another account, a household or a payment method. Being able to register does not settle whether a bonus will be awarded.
If the wording leaves your earlier membership in doubt, give support the name of that casino and ask about the exact promotion. Keep the answer with the offer terms. Our sister-site bonus guide separates eligibility from wagering: the first decides whether the offer applies, while the second describes what happens after a bonus is accepted.
Will another brand recognise my login and identity checks?
Do not try an existing password on a lookalike website. Open the receiving brand through its recognised address and use its own sign-in or registration instructions. A common owner is not evidence of a common login, and a matching screen does not authenticate the domain in your browser.
Identity checks are a separate matter. A casino may be able to reuse information, but you should rely on confirmation for that account. The verification guide explains how to distinguish another document request from a problem with access. Upload sensitive documents only through the operator’s recognised secure process.
Choose an alternative without losing track of an existing balance
A new account does not move money out of an old one. If a withdrawal is pending, keep its reference, request date and payment method with the business handling it. A sister brand’s support desk may point you towards the right team, but it should not be assumed to control the original account.
For browsing, begin with what you want to compare. The Virgin Games sister-site guide follows a named UK operating connection. Other guides distinguish reported families from relationships supported by current sources. Take the extra minute to check which applies; a familiar name can save searching, but it cannot do the checking for you.
Before choosing a sister casino
Will my balance move to another casino?
Only rely on a transfer documented by the business holding your account. Opening another membership does not move the money.
Does the same game mean the same owner?
No. Game studios supply unrelated casinos too. Use the named operating company and its current disclosure to check ownership.
Why is a casino missing from a family list I found elsewhere?
The lists may cover different dates, markets or types of business connection. Compare the named operator and source rather than treating a longer list as more accurate. A brand can also change operator while keeping its name.
Is joining another casino the way to recover a locked account?
No. Use the original casino’s account-recovery process. Opening a new membership does not resolve access to an existing balance, and the receiving brand may have its own account restrictions.