Was it possible to go out of the back of block 6 without entering an apartment?
If Jes and Gerry moved because of a car, why didn't they mention it?
If the cars headlights lit up Tannerman the car would have been almost fully into the road, facing upwards. The driver would either have to do a tight u-turn or a reverse to go down the road. Is it feasible that no-one noticed this manoeuvring?
Tbh, I dont know the answer to that. I think that it would be cheaper to just build the one staircase to serve the front entrance and back, but this would involve a landing /passageway of some sort. Dunno what method they used but on G.Earth there is no evidence of any steps on the back of this section of block 6. Surely all the apartments would have access to the rear and the parking there
When you are deeply engrossed in conversation one almost goes into automatic mode IMO. They got out of the way by moving back to the western kerb ... and never thought about it again. Not important
From the exit of the little car park opposite the Tapas Reception Area to the place where Gerry and Jez were chatting. The get-away driver could have come out and straightened up and still have been 15 metres, or so, short of Gerry and Jez chatting spot. Tannerman was a further 30 metres up the road and well lit by a very close street lamp. Jane was a little closer.
Yep the driver would have to make a turn backing into the entrance of the little car park, but that is not difficult for most drivers. I think it quite likely that his headlamps briefly lit Tannerman for Jane.
Most car headlights are monochromatic (show no colour, just shades).
So if this vehicle lit Tannerman showing colour, it reduces the types of vehicles used for the getaway to ones that gave a polychromatic spectrum of colours when lighting something.
A very useful clue if my theory is correct.
Just my theory, so it may or may not be correct.