I was in London and driving down Fleet Street was an old London Routemaster bus.
I was curious was TFL now running a Heritage route using the quintessential Routemaster red bus.
A quick Google search revealed this:
There’s a new vintage bus service for Central London. Route T15 links Piccadilly Circus, Trafalgar Square and the Tower of London. Fares for all-day use are £7.50 for adults (including seniors), £5 for children and £20 for groups of four. It’s not a TfL service, so you can’t use Oyster cards
So it’s not TFL, but certainly a nice idea to relive what it was live taking the Routemaster around London. It must be popular, as when I saw it again, it was packed.