Today between 12:00-15:00 there is an animal rights protest taking place. The protestors are currently meeting up on Park Lane. The route is as follows;

Park Lane
Piccadilly
Pall Mall
Trafalgar Square
Whitehall
Parliament Square

Social media indicates 2000 will be in attendance, at present they have no where near that figure.

No trouble is anticipated, but there is a large police presence.