London Underground
South Kensington Underground Station is the place to go for access to the museums,
it is served by the District and Piccadilly lines. Station facilities are limited,
there’s no step free access.
If it is a warm day I’d try go go for for the District Line, the trains are larger and air conditioned.
If you fancy a walk and are coming in from the west you could go to Notting Hill Gate
or High Street Kensington and walk through Hyde Park.
From the east you could go to Green Park or Hyde Park Corner, with Green Park
being quite a long walk past Buckingham Palace.