When choosing a UK casino with a solid slot library and good RTP, remember RTP...

https://wiki-book.win/index.php/Which_Casino_Has_More_NetEnt_and_Play%27n_GO_Slots_in_One_Place%3F

When choosing a UK casino with a solid slot library and good RTP, remember RTP reflects long-term returns and can vary by operator. Some casinos offer different RTP versions of the same slot