To find a UK casino with many high RTP slots, start by checking the game...

https://xn--toponlinecsino-uub.com/which-uk-casino-is-best-for-trying-lots-of-different-slot-mechanics/

To find a UK casino with many high RTP slots, start by checking the game library size and the software providers involved. Look for casinos offering filters by provider and category to easily sort games with better RTP rates