Compare each casino’s exact domain and legal operator in its terms, then check the GB register. A shared supplier or affiliate link means something else.
Check exact domains, legal terms and the regulator register.
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A fresh account at a sister casino does not guarantee another welcome offer. Check the promotion’s customer definition, group restrictions and refusal records.
Find the terms that determine a second welcome offer.
Read blogCasino operators behind different brands
Two casinos can look unrelated yet name the same gambling company in their customer terms. They can also share a game supplier or parent group while different companies run the gambling services. The distinction matters whenever a claim about “sister casinos” is being used to explain who holds an account or which rules might apply.
To check whether two casinos are sister sites, compare the legal company named in the terms for each exact address. For a British licence claim, the Gambling Commission register can connect the company to its recorded domain. The blog works through that comparison using Gamesys as a documented example.
If your pair is absent from the Sister Sites directory, the operator blog gives you the documents and company roles to compare yourself.
Welcome offers after an earlier casino account
A second casino name does not promise a second welcome offer. A promotion may define a new customer by reference to earlier accounts, a household, a payment method or named related brands. The wording can be narrower than the company's full list of casinos. Opening another account therefore answers a registration question, not necessarily the offer question. The Commission's rules require significant conditions on GB-licensed offers to be clear.
The welcome-offer eligibility blog starts with the promotion at the casino where you expected the offer. It shows how to read incorporated account terms and what to keep if the casino refuses the offer. The company link can point you to related terms; the promotion supplies the condition applied to your account.
Sometimes both blogs are useful. Someone who has been told that two casinos are sisters can first establish whether their customer terms name the same operator. Someone who already knows the company but has been refused an offer can go straight to the eligibility blog. A Mr Vegas sister-site page, for example, documents its named operator group; a question about a particular Mr Vegas promotion still calls for that promotion's terms.
Frequently asked questions
Can two casinos be sisters if their terms name different companies?
They may share a parent company, but different companies in the customer terms do not establish a shared gambling operator. Check the role each company has at the exact casino address. The operator-check blog explains how to compare those terms with a relevant British register entry.
Why can a welcome offer be refused after registration succeeds?
Registration does not confirm eligibility for a promotion. The refusal depends on the offer's actual conditions and the customer's account history; the registration screen does not state which condition applied. Keep the offer and terms shown when you registered, then ask the casino which clause and account information led to its decision. The welcome-offer eligibility blog shows how to read those clauses.