D6535 ( later 33116 ) is seen at Kensington Olympia with 4TC set 424 whilst working the SCTS Thamesider Railtour. This was a Victoria to Victoria railtour that included various spurs and branches throughout south and West London, including Caterham, Tattenham, Ludgate Hill and Tooting Goods.
More details from:-
http://www.sixbellsjunction.co.uk/60s/680331sc.html
Slide dated 31/3/68.
Photographer unknown.