UK Online Casinos & Slots —
UKGC-Licensed Sites Compared
All sites listed hold UK Gambling Commission licences. Compared on game count, bonus structures, wagering terms, and responsible gambling features.
What to check before choosing a UK slot site
Featured Site
Slotswise UK — UK slot comparison platform with 100+ partnered casinos
Slotswise is a UK-based slot comparison and review platform holding a UKGC operating licence. It partners with over 100 UKGC-licensed casino sites, providing a centralised location to compare available slot games, bonus structures, wagering requirements, and RTP rates across partnered platforms. Responsible gambling tools including deposit limits, reality checks, and GamStop links are prominently featured.
New customers only. 18+. UK residents only. Terms, wagering requirements, and game restrictions apply. Please gamble responsibly.
How online slots work — key terms explained
What does RTP (Return to Player) mean?
RTP is the theoretical percentage of wagered money that a slot game returns to players over millions of spins. A 96% RTP slot returns £96 per £100 wagered on average over a very large number of spins. It is not a guarantee for any individual session — it is a long-run statistical average. UKGC requires RTP to be disclosed for every game. Look for it in the game information panel.
What are wagering requirements?
Wagering requirements (also called playthrough) are the number of times you must wager a bonus before winnings become withdrawable. A 30x requirement on £10 of bonus winnings means you must place £300 in bets before withdrawal. Always check whether the requirement applies to the bonus alone or to bonus + deposit combined, and what the game contribution rates are (slots typically contribute 100%; table games often 10–20%).
What does "up to 100 spins" mean?
"Up to 100 spins" means the maximum number of bonus spins available. The exact number you receive may depend on your deposit amount, which game you play, or the specific promotion terms. Always read the full terms of any specific offer — the number of spins, their value per spin, which games qualify, and the wagering requirement on any winnings from those spins.
How do I self-exclude from all UK casino sites at once?
Register with GamStop at gamstop.co.uk — it is the national multi-operator self-exclusion scheme. Registration excludes you from all UKGC-licensed gambling websites for a minimum of 6 months, up to 5 years. The exclusion is immediate. You can also set deposit limits and cool-off periods on individual sites without self-excluding entirely.