Wait around for an hour in Paddington to give keys

I need someone to wait around Paddington Station, London for 1 hour on 25 December 2018 to pass on keys. Details: I need to give keys to someone. The keys are located in a key box inside the local corner shop. The shop closes at 9pm on Christmas Day, 25 December. My friend will arrive at the shop between 8:30pm to 9:30pm. You need to go to the shop at 8:45pm, pick up the keys from the key box in Craven Road, London. Wait outside the shop up to 9:30 pm. Shop address:40-42 Craven Rd, London W2 3QA, UK I will give you access code to the key box. You will be in contact with my friend and me. It will suit if you live in the area. The shop is a 3 min walk from Paddington station (circle, Bakerloo) or Lancaster Gate station (Central line)