When choosing a UK casino with a solid slot library, consider the long-term RTP...

https://www.yankee-bookmarkings.win/when-choosing-a-uk-casino-with-a-solid-slot-library-check-the-rtp-since-it

When choosing a UK casino with a solid slot library, consider the long-term RTP since it's an average return over many spins. Some games have different RTP versions depending on the operator