About

Who runs UK Slot Margin?

UK Slot Margin is a small, independent comparison project focused on how UK-licensed casino operators perform on mobile. We are not a casino, not a payment processor and not affiliated with the UK Gambling Commission. We do not accept player deposits, run games or settle bets.

Our writers test operator apps and mobile sites on real devices, check licence numbers against the public register, and score each brand against eight fixed criteria. When an app gets a major update — new biometric login, a redesigned live lobby — we revisit the scorecard.

The site is funded through affiliate partnerships. If you click through to an operator and open an account, we may earn a commission. That income keeps the comparisons free to read, but it does not let operators buy a higher ranking. We list brands we would actually consider using on a phone, and we say plainly when one falls short on mobile.

We write for UK adults aged 18 and over. Gambling should be entertainment, not a way to make money. If it stops feeling that way, tools like GAMSTOP, GamCare and deposit limits exist for a reason — use them.

Questions about our comparisons? Visit the contact page. For account issues with a specific operator, you will need to speak to that operator directly — we cannot access player accounts.