Spin King Sister Sites: Verified UK Brands and Ownership

Which casinos are Spin King's sister sites?

This comparison is based on the trading names and domains associated with Happytiger ApS in the UKGC register, rather than unverified affiliate lists. The status is the regulator's listing on 12 November 2026, not the result of creating accounts or testing all four sites.

The operator is Happytiger ApS, UKGC account 57641. The register lists its remote casino and bingo permissions as active. All four trading names appear under that operator, and each principal domain appears on its active-domain list.

That is solid evidence of a licensing relationship. It does not mean that the four sites offer identical games, accept the same sign-in details, display the same promotions or maintain a shared wallet. Those are separate operational claims, and the regulatory record does not establish them.

Nor does an active domain entry guarantee that a particular website is reachable and accepting new registrations at the exact moment you visit it. The register is a record of authorised names and domains. A current offer or account journey must be checked on the individual site.

For the wider assessment of the original brand, see my Spin King casino review.

Why there are four brands but more than four domains

This is where many sister-site lists become misleading. The UKGC record contains 13 active domain names for Happytiger ApS, but only four active trading names. Some domain entries are spelling variants or closely related addresses, including spin-king.co.uk, spinking.com, spinking.uk, kingspin.co.uk and similar forms.

I would not turn each of those addresses into a separate casino in a comparison table. A registered domain is not automatically another trading brand. Nor have I independently confirmed where each alternative address directs visitors.

The distinction matters if you have reached a page through a search result or an advertisement. Check the exact domain against the operator's current UKGC listing and verify the operator details on the site itself. A familiar crown logo or a close variation of “Spin King” is not enough.

There is a second geographical trap. CEGO's own corporate website lists both a British Spin King operation and a Danish spinking.dk brand. That makes them group-related businesses, but it does not make the Danish website a fourth British sister casino under Happytiger ApS's UKGC licence. The market and regulator are different.

What happened to Bingo Boost and Bingo Burst?

The regulator's current trading-name record also includes Bingo Boost and Bingo Burst, both marked inactive. Multiple associated Bingo Boost and Bingo Burst domain variants likewise appear on the inactive part of Happytiger ApS's domain list.

These names are relevant to the history of the operator, but I would not present them as current places to register or as live alternatives to Spin King. An inactive entry tells us the name or domain is not currently shown as active under this licence. It does not, on its own, establish precisely when a website closed, what happened to previous customers or whether the name might ever be reused.

That is why my current comparison separates active trading names from historical entries. It is a more meaningful distinction than a sister-site count copied from an older review.

Who actually owns Spin King?

There are three levels to keep separate:

1. Consumer brand: Spin King, presented to British customers at spinking.co.uk.
2. Licensed operator: Happytiger ApS, the Danish-registered company named in Spin King's terms and in the UKGC public register under account 57641.
3. Corporate owner: CEGO A/S. Spin King's terms expressly identify Happytiger ApS as part of the CEGO Group and owned by CEGO A/S.

In other words, Spin King and Happy Tiger are not merely websites that happen to use similar software. Their British operation shares a named licence-holder. CEGO is the corporate parent above that operator, not a substitute for the licence-holder shown to UK players.

The distinction prevents a common mistake: treating every brand on the wider CEGO platform as though it were automatically a British sister site with the same account conditions. A business can share a technology platform or corporate group without sharing the same national gambling licence. The UKGC record is the deciding source for a UK operator relationship.

You can find the fuller regulatory context in my Spin King licence and safety guide.

Can you claim another welcome bonus at a sister site?

Do not assume that a different casino name means a second new-customer offer. As checked on 12 November 2026, Spin King's official welcome terms identify the Happytiger ApS brands as Happy Tiger, Spin King, Lux Casino and Crush It. They say that registering for the welcome offer removes eligibility for another welcome offer at the operator's other brands.

The published terms also make the offer subject to individual eligibility and opt-in conditions. Crucially, they refer to having registered for the welcome offer, rather than proving that every person who once visited or opened an account at any related site is automatically barred from every future offer.

Consider three different situations:

The same warning applies in reverse: an offer registered for at another Happytiger ApS brand may affect what you can claim at Spin King. A new-looking website is not necessarily a fresh new-customer opportunity.

The figures, expiry dates and wagering calculations of any specific Spin King promotion belong on the separate Spin King bonus terms page. This sister-sites guide is about cross-brand eligibility, not a promise of a particular bonus or its value.

Does one operator mean one login, wallet or set of limits?

Not necessarily. Common ownership is not proof of a universal login or shared balance. I did not open real-money accounts to test whether a username, stored balance, payment method or identity check moves between these brands. The operator's general terms require a single gambling account with the operator, but that wording alone should not be converted into a claim about precisely how sign-ins and balances work across every branded site.

Safer-gambling restrictions need similarly careful wording. Spin King's terms say the operator may take similar protective action on accounts held at its other sites or those of group companies if it identifies indicators of gambling harm on one site. That is not the same as evidence that every account limit or check is instantly and identically mirrored in every interface.

If you already have an account, have been asked for verification, or have received a restriction, I would contact the operator before trying another related brand. Never use a sister site as a way around an account restriction or self-exclusion. A formal GAMSTOP exclusion operates across participating British-licensed online gambling operators, not merely websites within this one group.

How I would check a claimed sister site

For a site that does not appear in the four-brand table, use this short evidence test:

1. Read the site's legal footer and terms. Look for the exact licensed company, not just a familiar group logo.
2. Match the company and domain to the UKGC register. For Spin King's current family, the starting account number is 57641.
3. Check whether you are looking at an active trading name, an alternative domain or an inactive historical name. These are different categories.
4. Read the live welcome terms before creating a second promotional account. A shared operator can impose cross-brand conditions even when the websites look different.

This method also protects you from confusing unrelated brands such as “Spin and Win”, or pages built on Spin King-like domain names, with the actual British operation. A search result claiming that a casino is a sister site is a lead to investigate, not legal proof.

My assessment of the Spin King family

My conclusion is straightforward: Spin King has three other active UK trading names under the same licensed operator, based on the regulator's records on 12 November 2026. They are Happy Tiger, Lux Casino and Crush It. Bingo Boost and Bingo Burst are historical names in the operator's register, currently marked inactive. The 13 active domains should not be described as 13 separate casino brands.

The biggest practical finding is the one-welcome-offer restriction across the named Happytiger ApS brands. I would verify an existing customer's eligibility before another registration, and I would not assume that shared ownership means a shared wallet or identical games. Those matters require direct account-specific evidence.

This is a desk-based assessment of the public register and operator materials, not a hands-on test of the sister sites. Brand status and promotional terms can change, so the regulator's record and the live terms remain the final checks.

18+. Gambling is restricted to eligible players in Great Britain. Only gamble with money you can afford to lose. If gambling is causing harm, seek support through the National Gambling Helpline or use an appropriate self-exclusion service.