I cycle over the top part of this road every day to go up Horse Guards Rd and as someone said before, there are no road markings or lights so there's no obligation for traffic to stop for waiting pedestrians. Obviously, if someone is already in the road, then you let them cross safely but the ped is also obliged to ensure they can cross safely before stepping out.
I think these are just focal points of the road for peds to cross and the raised aspect of it makes it a) easier for people with pushchairs or using wheelchairs to cross b) makes the traffic slow down a bit at that point.
I think these are just focal points of the road for peds to cross and the raised aspect of it makes it a) easier for people with pushchairs or using wheelchairs to cross b) makes the traffic slow down a bit at that point.