Cornhill & Saint Michael's Alley
London EC3V 3QQ
Walk up St Michael's Alley from Cornhill, then turn left to go to the back of the church; you should see the churchyard. After you enter the churchyard grounds there are 2 doors on your right hand side next to each other. We are in the left of those 2 doors. There should be a CoDA sign up. Knock on the door.