London Buses route N28

From the Wikipedia page on night bus routes which has more information.

Buses route N28 is a Transport for London contracted bus route in London, United Kingdom. The service is contracted to Tower Transit.

Night bus N28 runs the night service for route 28 between Wandsworth & Harrow Road. Route N28, together with route N31, run the night service for 31 between Notting Hill Gate & Camden Town Station.