UK Casino Sister Sites & Parent Company Directory (2026)

SisterIndex is a UK casino sister-site research hub. Start with a brand name, then trace the operator, licence holder, parent company, platform clues and account rules behind it before assuming two casinos are truly connected. Use the hub to separate confirmed sister sites from wider group brands, old relationships and simple lookalike alternatives.

Reader route update

Start with payout timing, payment checks and sister-site meaning

SisterIndex keeps practical checks close together: withdrawal-time questions, Apple Pay casino checks, sister-site meaning and named brand comparisons. The homepage now gives readers clear routes into those checks before they browse longer archives.

Withdrawal-time checksPayment and cashier routesSister-site comparisons

What does SisterIndex verify?

Related does not mean identical, and a shared platform alone is not proof of common ownership. SisterIndex separates same-operator brands, wider parent-company relationships, platform connections and historical links so a familiar logo or website layout is never treated as enough evidence by itself.

145published brand pages
9operator-network hubs
12verification guides
11research notes
12featured casino profiles

How to read this page: SisterIndex is an independent information site, not a casino operator. Some “Visit” links may be commercial. A featured card does not by itself confirm a sister-site relationship, availability in Great Britain or a current Gambling Commission licence. Check the destination, legal entity, licence status and live terms before registering. 18+ only.

SisterIndex editorial team and research method · Updated 20 August 2026: tightened sister-site wording, added operator-intent routes and improved brand-network explanations.

Confirmed sister site

Same operator or licence holder

Use this label when the legal company, licence wording or official terms connect the brands clearly enough to affect account, bonus or support checks.

Wider group brand

Same parent, different route

Use this when brands sit under a shared parent company but may still keep separate cashier rules, promotional terms, apps or complaint paths.

Platform clue

Similar technology is not proof

Shared software, repeated layouts or matching game lobbies can be useful clues, but SisterIndex treats them as supporting evidence, not the whole answer.

Comparison only

Lookalike casinos stay separate

If ownership evidence is missing, the page should say the casino is a similar alternative rather than forcing a sister-site claim.

Visual checks that support sister-site research

Good sister-site research should show the type of evidence being checked, not just list casino names. These cards point readers toward bingo brands, wider casino comparisons and operator-network checks.

Bingo casino sister sites and related brand checks
Bingo sister-site checks Use this route when the casino search is bingo-led and related-brand wording matters. Open bingo checks
casino bonuses slot machine with gold coins for UK sister-site bonus checks
Casino comparison checks Start with the brand directory when you need related casinos, similar alternatives and ownership context. Browse sister sites
Casino operator network research for sister site checks
Operator network checks Use operator pages when several brands may share ownership, licence wording or account rules. Compare networks

12 Featured Casino Websites to Compare

Use the cards as a commercial comparison, then check each destination’s operator, current terms and jurisdiction. Inclusion here is not proof that a brand is UKGC-licensed or related to another casino.

Zizobet

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A casino sister site is another brand connected through the same operator, licence holder, parent company or operating network. SisterIndex maps those relationships so readers can separate genuine sister casinos from unrelated sites that merely look similar.

Find casino sister sites by brand or operator

Use the UK casino sister-sites directory when you already know the brand name. Each page identifies the company relationship, lists connected brands and links into the relevant operator network where one exists. If you know the company but not the consumer brands, begin with the casino operator and parent-company directory. Together, these routes work as a casino parent company directory for questions such as who owns a casino brand and which casinos are owned by the same company.

Start with major UK networks

Large UK casino sister-site networks are the best first stop when ownership, licence context and account wording affect more than one brand. Start with the operator-family page, then move into the individual casino guide once the relationship label is clear.

These pages explain larger casino operator families where sister-site wording, licence context and account rules can affect bonuses, verification, support routes and safer-gambling checks across more than one brand.

Check standalone or limited-network brands

Some searches are valuable because the correct answer is not a broad sister-site family. These pages help separate standalone brands, limited networks and single-account product routes from larger operator groups.

Support guides for sister-site research

Use these guides to move from a named brand into its operator, sibling brands, account relationships and practical player checks.

New casino sister-site research

New brand pages are added to the directory when they help readers check a named casino, its operator details and related-brand context without forcing those searches into unrelated feature articles.

How do operator networks connect casino brands?

A casino brand is the public name, the operator is the legal company running the service, and a parent company can control several operators or brands. Those layers explain why two casinos may be connected without sharing a name, colour scheme or website design—and why a group relationship does not automatically create identical account terms.

SisterIndex keeps those layers visible. A brand page answers the named casino question. A network page explains the broader company or operator relationship. Supporting guides answer narrower relationship questions such as whether connected brands use separate accounts, how an ownership change affects a group and how to distinguish a real sister site from an independent alternative.

Operator connection

Two brands may be sister sites because the same legal operator runs both. This is usually the clearest relationship because the company name can be compared across the sites’ terms and corporate information.

Parent-company connection

Brands can also sit within the same corporate group while using different operating entities. In that situation the parent-company hub helps readers understand the wider family without pretending every practical detail is identical.

Platform or white-label connection

A shared platform can make two casinos feel related, but software alone does not always prove common ownership. The sister-site verification guide explains how to use platform clues alongside operator and company information.

What can casino sister sites share—and what can still differ?

Casino sister sites may share an operator, licence account, platform, support systems or parts of the customer journey, but the practical details can still differ by brand. Check the exact website for its login rules, bonus eligibility, payment methods, withdrawal process, complaints route and safer-gambling controls before assuming one experience carries across the network.

Strongest connection

Same operator or licence

The same legal licensee appears in the sites’ regulatory statements or terms. This is the clearest sister-site relationship, although each brand may still publish different offers and cashier rules.

Wider group

Same parent, different operator

The brands belong to one corporate group but use separate operating companies or licence accounts. Group ownership is relevant context, not proof of a shared login, wallet or promotion.

Technical clue

Platform or white-label link

Similar software, payments or page structure can point to shared infrastructure. SisterIndex treats this as a clue until operator, licence or company evidence confirms the business relationship.

Date-sensitive

Historical or inactive link

A casino may have closed, rebranded or moved operator. Historical relationships are labelled so an old network list is not mistaken for the brand’s current ownership or licence status.

What a casino relationship can and cannot tell you
Area to check What may be shared What must be checked again
Operator and licence Legal entity, licence account or parent-company ownership. The current domain, licence status and exact relationship label.
Account and login Identity data or connected account systems in some groups. Whether registration is separate and whether an existing account restricts access.
Verification Similar KYC wording, document provider or source-of-funds process. Which documents this brand requests and when its review happens.
Bonuses Group-wide exclusions for existing customers or connected accounts. The live offer, wagering requirement, maximum bet and eligibility terms.
Payments and withdrawals Some cashier providers, limits or processing procedures. Available methods, pending time, fees, limits and first-withdrawal checks.
Support and safer gambling Complaint handling or controls managed across the same business. The brand’s contact route and the scope of any exclusion or account restriction.

The practical rule is simple: use a network connection to decide what to investigate, not to skip the investigation. The guides on accounts across sister casino brands and UK casino withdrawal times explain where shared ownership can matter without promising identical results.

Priority UK casino operator networks

The main UK casino operator networks are best explored from the company down to each named brand. A network hub shows the wider group, while the linked brand pages explain whether the connection is direct, indirect or historical and which account, offer or payment details still require a separate check.

How do you verify who owns a UK casino?

Start with the casino’s footer and terms, record the legal licensee and account number, then compare them with the Gambling Commission register and Companies House. Repeat the check on every supposed sister site. Matching design, games or payment icons can support the research, but they do not replace current company and regulatory evidence.

  1. Read the legal footer. A remote business licensed in Great Britain must display its licensee name, Gambling Commission account number and a link to its current licensed status. If those details are missing or point elsewhere, do not assume the site is British-licensed.
  2. Open the exact register record. Search the Gambling Commission public register and confirm that the operator and domain correspond with the casino being researched. A licence held by a similarly named company is not enough.
  3. Trace the company layer. Use the Companies House register to compare company numbers, active status, registered names and filing history. Companies House is useful evidence, but it also warns that filed information is not checked for accuracy.
  4. Separate ownership from infrastructure. The same game lobby, cashier supplier or white-label platform can serve unrelated legal operators. Label that relationship as a platform connection until stronger evidence shows common ownership or licensing.
  5. Date the result. Brands close, migrate and change ownership. Check the source date and the live casino terms rather than relying on an old list. SisterIndex marks historical links where a former relationship still helps explain older searches.

SisterIndex uses that evidence order across its casino sister-sites directory. The honest limitation is that corporate structures can be opaque and public records can lag behind a commercial change. When a relationship cannot be verified, the safer label is “alternative” or “platform connection,” not “sister site.”

What changed for UK casino bonuses in 2026?

From 19 January 2026, Gambling Commission licensees cannot set a wagering requirement above 10 times the bonus funds or combine different gambling products within one incentive. Those rules make the legal operator and jurisdiction especially important: a headline bonus on a commercial card should never be compared without checking who offers it and which rules apply.

10× maximum

The current UK bonus code caps the wagering requirement applied to bonus funds at 10 times. The live terms should still explain game contribution, maximum stake, expiry and withdrawal conditions.

One product per incentive

A licensed offer cannot require or reward a mixture of betting, casino, bingo and lottery products within the same incentive. The restriction applies to Gambling Commission licensees; it should not be projected onto a site operating under another jurisdiction.

A large percentage or free-spin total is therefore only the beginning of a comparison. Read the complete terms, check whether previous accounts across related brands affect eligibility, and treat a deposit route separately from the withdrawal route. The casino deposit-method guide and withdrawal-time checklist cover those practical steps.

Why check the operator before opening another casino account?

The operator determines more than the branding: it connects the account to legal terms, licence status, complaints handling, bonus eligibility and safer-gambling responsibilities. Checking that layer before registration can reveal whether a supposedly new casino sits inside a group already used, whether restrictions may carry across brands, and which company would handle a dispute.

Existing accounts can affect a new offer

Two related brands do not automatically share one login, but a promotion may still exclude customers who previously registered with a connected operator. Compare the eligibility wording on the exact offer instead of assuming a new logo creates new-customer status. The 888 Casino sister-sites guide and 888 Ladies relationship page show why product and brand labels need separate checks.

Payments and verification can follow different timelines

A familiar cashier does not guarantee the same withdrawal speed. Pending periods, document reviews, source-of-funds questions, payment ownership and bank processing can change the result. Compare the deposit and withdrawal pages before funding the account, especially when a card advertises a headline payout time.

Complaints and self-exclusion depend on the real business

Knowing the licensee identifies the relevant complaints route and helps establish which controls may apply across connected accounts. The Gambling Commission says GAMSTOP Online provides multi-operator online self-exclusion through one request; individual businesses must also maintain their own arrangements. Anyone struggling with gambling should use the responsible gambling support guide rather than open another account.

What are the limits of a casino sister-sites directory?

A directory can organise public evidence, but it cannot freeze a fast-changing commercial relationship or replace a casino’s current legal terms. Operators can sell brands, move domains, change licence arrangements or close websites, while platform providers can make independent businesses look closely related. Every network result therefore needs a date and a final live-source check.

  • Ownership can change: an accurate historical connection may no longer describe the active brand.
  • Public records can lag: a commercial announcement and the corresponding register or company filing may not update together.
  • Shared technology can mislead: the same platform, games or payment processor is not proof of common ownership.
  • Terms remain brand-specific: bonuses, limits, KYC timing and withdrawals must be checked on the exact website.

How do you start a sister-site check?

Begin with the named brand, identify its legal operator, open the relevant network page and compare only the sibling brands supported by current evidence. Finish by checking the exact destination’s licence statement, account terms, cashier and safer-gambling information. That route is faster and more reliable than treating every similar-looking casino as connected.

  1. Search the brand directory. Open the named casino’s primary sister-site page.
  2. Identify the operator. Record the company or licence-holder name shown in the relationship summary.
  3. Open the network hub. Review the wider group and the other brands covered by SisterIndex.
  4. Compare sibling pages. Use the descriptive links to inspect two or three connected brands.
  5. Keep similarity separate. A casino with comparable games or design is not automatically a sister site.

For more detail, read casino brand versus operator, how to find casino sister sites by operator and whether casino sister sites share accounts.

Casino sister sites FAQ

What is a casino sister site?

A casino sister site is a brand connected to another casino through the same legal operator, licence account or corporate group. The exact relationship matters: two brands under one parent may still use different operators, accounts and terms. A shared platform alone is treated as supporting evidence, not automatic proof.

How do I find a casino’s sister sites?

Start with the casino footer and terms, note the legal company and licence account, then compare those details with the SisterIndex brand directory and official registers. Repeat the check on each connected brand because old network lists, matching designs and shared games can all create false positives.

Do casino sister sites share the same account or login?

Not always. Some operator groups use connected account systems, while others require a separate registration for every brand. Even with separate logins, identity checks, exclusions or promotional restrictions may still refer to related accounts. Read both brands’ current account and privacy terms before registering again.

Can I claim a welcome bonus at another sister casino?

Only if the new offer’s live eligibility terms allow it. A related operator may exclude existing customers from a welcome promotion even when the second brand requires a fresh login. Check the named brands, previous-account wording, payment exclusions, wagering requirement and maximum-bet rule before accepting any bonus.

Does self-exclusion apply across sister sites?

It can. The scope depends on the operator’s controls and any multi-operator scheme used. GAMSTOP Online covers participating online operators through one request, while businesses also maintain their own arrangements. Do not test an exclusion by trying another brand; contact the operator or a support service for clarification.

Where should a new SisterIndex visitor begin?

Use the brand directory when the casino name is known and the operator-network directory when the company or parent group is known. Open the verification guide for an uncertain relationship. If gambling is becoming unaffordable or difficult to stop, skip the comparison and use the support resources.