So I booked at the highbury and islington drop off. I arrived to find that the pub had no recollection of offering the service. Eventually they took the bag but I spent the entire time that o was away wondering if I would get it back. When I arrived to collect the bag there had been a change of staff and noone knew anything about it. The pub/restaurant was busy and they didn't really have much time to go looking for it. Fortunately I'd insisted that the guy when dropping off had written the order number on a piece of paper and taped it to the bag. The fact that I could give him the 10 digit number finally convinced the bar tender to give me my bag back. I would suggest that better policies and processes are set up around accepting drop off sites if you're bookings are prepaid!