• Heritage route 9: Royal Albert Hall — Hyde Park Corner — Piccadilly Circus — Trafalgar Square — Strand — Aldwych. Operated by First London, this is a short working of existing route 9.

• Heritage route 15: Trafalgar Square — Strand — Aldwych — Fleet Street — Cannon Street — Monument — Tower Hill. Operated by East London, this is a short working of existing route 15.

http://en.wikipedia.org/wiki/Routemaster