Why not Piccadilly Circus? Absolute shithole.

If we're just blowing up shit because it looks bad, the first thing you need to drop a bomb on is the London Eye. After that, maybe aim for the folks that collect the rents, not the people just commuting through.

The only people with stakes in it are tourists, major corporations, west end theatres, and anyone rich enough to even live remotely close to it.

If you want to kill a bunch of British landlords, firebomb Australia.