Do Sister Casinos Always Have the Same UKGC Account Number?

What Does a UKGC Account Number Identify?

The UK Gambling Commission account number belongs to the gambling business.

The Commission describes it as the unique reference number for that business. It appears in the Public Register alongside the legal account name, licence status, trading names and domain records.

That is an important distinction.

The number is not a universal identifier for a casino brand family, marketing network or ownership group.

If several casino brands are operated by the same legal company, they can appear under the same business account. If related brands are operated by separate legal companies, their UKGC account numbers can differ.

When Should Sister Casinos Have the Same Number?

The clearest case is when two brands are operated by the same licensed gambling business.

Suppose Casino A and Casino B both identify the same company in their licensing statements and both domains appear under the same business entry in the UKGC Public Register.

That is strong evidence that the same legal operator is responsible for both brands.

In that situation, seeing the same UKGC account number is expected.

It is one of the strongest operator-level signals available when mapping sister sites because it ties both brands back to the same regulated business.

Why Can Related Casinos Have Different Numbers?

Casino relationships can exist above the immediate licence-holder level.

A wider corporate group may own several licensed companies. Each company can hold its own operating licence and therefore have its own UKGC account number.

The brands may still share:

• a parent company
• group ownership
• management resources
• technology
• commercial strategy
• branding relationships

But if the legal gambling business named on the licence differs, the UKGC business account can differ as well.

This is why A2Z does not use “same group” and “same operator” as interchangeable labels.

Same Group vs Same Operator

This difference matters when deciding what kind of sister-site relationship to record.

Imagine a group with two licensed subsidiaries:

• Company A operates Casino 1 and Casino 2
• Company B operates Casino 3 and Casino 4

Casino 1 and Casino 2 may share one UKGC account number. Casino 3 and Casino 4 may share another.

All four could still sit inside the same wider corporate group.

For a player or researcher, those are two different relationship layers:

• operator-level sister sites — same legal gambling business
• group-level related brands — different legal operators under wider common ownership

That distinction becomes especially useful when terms, payments or customer accounts differ between brands that appear related at group level.

Can One Website Show More Than One Account Number?

Yes.

UKGC consumer guidance says that if a website or app operates under multiple licences, more than one account number can be displayed in the licensing information.

That is another reason not to assume that every casino page will always show exactly one simple operator reference.

The licensing statement should be read as written, then matched back to the Public Register.

Where multiple account numbers appear, each should be checked rather than choosing whichever one looks most familiar.

What Does a Matching UKGC Number Actually Prove?

A matching UKGC account number is strong evidence that the same licensed gambling business sits behind the relevant regulated activity.

It does not, by itself, establish that the brands have:

• the same login
• one shared wallet
• identical withdrawal times
• the same bonuses
• the same payment options
• the same platform configuration

Those questions need separate evidence.

For example, two brands under the same operator can still have different withdrawal terms or payment menus.

See: Can Sister Casinos Have Different Withdrawal Times? and Do Sister Casinos Use the Same Payment System? .

How A2Z Checks UKGC Account Relationships

A2Z treats the account number as an operator-level field, not a shortcut for every kind of relationship.

1. Check the live casino footer.
   Record the legal company and account number shown today.
2. Open the UKGC Public Register.
   Search the account number or exact domain.
3. Match the domain.
   Confirm that the casino domain appears against the business record.
4. Compare related brands.
   Check whether they point to the same account or another licensed company.
5. Separate operator and ownership layers.
   Different account numbers do not rule out common group ownership.
6. Preserve historical changes.
   If a brand moved operator, record the previous relationship separately rather than treating the old UKGC account as current.

This approach produces a more useful network map than simply assuming every related brand must share one licence reference.

For the broader evidence test, see How to Tell If Two Casinos Are Really Sister Sites .