Hehe, I used to live pretty much there....
Anyway, that is a really Jewish area, so I think it will be appreciated, but most traffic lights I use in London don't require you to press a button anyway, although with the creation of the eruv they have already started pushing the boundaries a little
The eruv extends the boundaries of the household so that they can technically move around more freely
Also, before criticism of Judaism, this is a rule only observed by a minority anyway, though a silly one nonetheless I feel