This is unofficial but at present some screwfix / builders merchants etc are still open, I have received a couple of emails in the last few days from accounts that I have, all saying they are to close on the 31st March. Some pre ordered deliveries may still be fulfilled. This may be coincidence but it may mean an announment that building sites etc are to close etc. And these sites going to be forced to close.
so if you’ve got that garden project or diy job to do. I would get your order in.