Passengers on bus route 100 between Elephant & Castle and Shadwell enjoyed free rides on a 66-year-old vintage RT bus on Saturday.
A 1948 AEC Regent III (RT) – owned by Ensign Bus – ran four return trips on route 100 in connection with an open day at Walworth Bus Garage near Camberwell Green.
The regular bus service on route 100 is operated from Walworth Garage by Dutch-owned firm Abellio.
This autumn Go-Ahead London will take over the operation of route 100 with a fleet of new single-decker hybrid buses.
Saturday's event was part of Transport for London's Year of the Bus.