New Law idea

Here's a good idea for all those idiots in Whitehall (and this can include Red Ken by extension).

Why don't controlled pedestrian crossing have the same protection as box junctions?

I work in London's West End, and the amount of times a driver (professional drivers usually: bus, taxi etc) stop right in the middle of a crossing, because going forward would cause them to be in a box junction, for which they'll get fined.

Surely this can't be right, why can't this be enforced or put right?