I too have found Screwfix to be reliable, I've used then from the mail order only days, we now have several shops locally. Been let down once some years ago and got a money off voucher for my next purchase. During lock downs service has been as good as ever.
I would like to say the same about Wickes. Their "click and collect" service was okay. Recently went to the local branch for the first time in over a year only to find stock levels drastically reduced. Tried them online, most of what I want unavailable. Hope they raise there game otherwise I can see them disappearing.
John