No CSC and mcd are nearly opposite each other. The Csc cam is pointing at Mcd entrance and if you stand at mcd entrance facing outwards you are looking to the front of the Csc. The mcd cam is internal looking at the customers coming in from outside and so would be looking at Csc if it could see thru the doors. The guy comes from the left as if we are standing inside similar to the outward facing cam. H/s and Butter M are to left (I think) in this latest moving image which is the direction he comes from and agrees with the previous still pod footage from the CSC cam. Sorry to confuse I think I misunderstood where Butter Market is.
That's if you are on the side window of McDs and not actually at the door. In that instance you would have Cornhill opposite nearly and horseshoe to the left. But this footage is inside looking towards the door which isn't the same position. On the map above CSS is to the right of the doorway.