They have always been slow. I was told once that a cheque would take 7 days to clear. When I enquired as to why that was, the minion replied "It just does". Never used them since. Tesco use the fast pay system with the other Big Banks that operate it but I have no experience of refunding time.
Sony Xperia Z5 review: Hands-on with the phone which the Z3+ should have been