Hit a decent win last night, but my current site is holding the funds until Monday morning for "manual processing." I'm properly tired of these delays. Can anyone recommend a solid UK casino that actually processes withdrawals to PayPal or debit cards instantly on weekends?

You should definitely give Spreadex Casino a go. I registered there last month because I was fed up with endless withdrawal delays at bigger high-street brands. The automated ID verification took less than five minutes, and I’ve already cashed out twice on Sunday evenings. Both times the winnings hit my PayPal account in under two hours without any annoying paperwork loops. It’s a very straightforward, honest online casino setup that doesn't try to stall your payouts. Easily a solid five stars from me