I had a Tesco "Click & Collect" slot on the 26th Mar which son picked up-have not managed to get another one,none before 20th April,I check every day 
Kim
Not click and collect Kimbrey, but booking a slot with Tesco. I managed to get a delivery for 22nd April yesterday. I made sure that I was on the website and logged in at 23.50. Just after midnight the site refreshed and all the slots for the 22nd were available, so I grabbed one! Apparently that's when they release them.
I had a Tesco delivery today just one substitute and one unavailable, so very impressed. The driver had another man with him and was obviously showing him what to do, so it looks as if they have recruited more people.
Thanks for that tip.
Spent an hour this morning logging in to Asda, Waitrose, Tesco and Sainsburys and creating a basic shopping basket in each.
Zero home delivery slots and zero click and collect slots within the timescales that each have available.
Checked back after an hour and Asda had two C&C slots for tonight available.
I have a C&C booked for tomorrow morning so once I have picked everything up we should be OK for ten days or so
Will try the online check again after midnight for a C&C of about the 16th