Fast payouts are advertised everywhere but which UK casinos actually deliver?

Almost every UK casino claims to have “fast withdrawals,” but in reality the experience seems to vary a lot once you actually request a payout I’ve had situations where one site paid out the same day, while another took several days even though both claimed to be fast. Sometimes it’s the payment method, sometimes extra verification, sometimes it’s just unclear what caused the delay. I’m curious how people here judge whether a casino is genuinely fast-paying or just good at marketing. Do you rely on personal experience, word of mouth, or review comparisons? I’ve been checking breakdowns on sites like iGamingNuts to get an idea before signing up, but real user experiences always feel more reliable. Would be great to hear what others have noticed.