Starburst (NetEnt) · 3. PlayFrank · 2. JackpotJoy Casino: Best Progressive Jackpot Slots Site. Best Online Casino Site for Slots: Winomania. Best UK Slot Sites · 1. Mr Vegas. Over Slots; Best Game Providers; Huge Live Casino Section. Leo Vegas: Best Mobile Slots Site. Find the best UK online casinos with the latest real money slot games, excellent bonuses, online betting, loyalty rewards and more. All UK Slot Sites () · Bally Casino · Planet Sport Bet Casino · Casushi Casino · [HOST] Casino · Lottoland Casino · BetUK Casino. Find your perfect match and win real money at the most trusted slot casinos in the UK. Bonanza Megaways. Play a wide variety of online slots at the best UK slot sites. These generally come from leading software providers, with Starburst, Book of Dead, Gonzo's Quest and Bonanza being among the most popular slots. % Bonus up to £50 + Bonus Spins. Kwiff Casino: Best Free Spins Slot Site. Top UK casinos for playing slots · Duelz · Mr Vegas · Magic Red · MrQ · VoodooDreams · Luckster Casino · Winomania · Hotstreak Slots. Discover the Best Online Slots · 1. Casumo · 3. Magical Vegas Casino: Best Megaways Slot Site. Book of Dead (Play 'n GO) · 2. You are. Videoslots Casino · 4. Fun Casino · 5. Best Features: Over slot games, including more unique slots like Scratch King. Immortal Romance (Microgaming) · 4. .