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

https://research-wiki.win/index.php/RTP_vs_Volatility_%E2%80%93_Which_Matters_More_for_a_Casual_Player%3F

When choosing a UK casino with a strong slot library and good RTP, remember RTP reflects long-term returns. Some slots offer different RTP versions depending on the operator