First, some photos from Trafalgar Square.
And from Marble Arch (with the typical phonebooth!):
Around Queen's Theatre (Shaftesbury Avenue) before Les Misérables:
And photos from the no. 23 bus (first one from somewhere between The Royal Courts of Justice and St. Paul's Cathedral, then from St. Paul's Cathedral and last from somewhere between St. Paul's Cathedral and Charing Cross - all photos taken from the bus):