The first time I used an electronic prescription, I went there the following day, around noon, and they told me that I needed to wait a full 24 hours, but that they would get it ready for me in an hour. An hour later I had to stand around for 40 minutes while they filled the prescription (no idea why it takes so long to print out a label and bag up some boxes of tablets). Next time, I waited a full 24 hours, only to be told that I needed to allow 3 working days, the explanation was that they had hundreds of prescriptions a day to deal with. I want to Asda pharmacy and they managed to do it 20 minutes.