When choosing a UK casino with many high RTP slots, start by checking the game...

https://www.blaze-bookmarks.win/when-choosing-a-uk-casino-with-lots-of-high-rtp-slots-look-beyond-the

When choosing a UK casino with many high RTP slots, start by checking the game library size and the software providers included. RTP is a theoretical number showing average returns over time, not a guarantee