RTW501:
May 2012, London Trolleybus 1521 still on towing bar/jack just returned to EATM from Fulwell, West London. - Big towing Volvo seen in comments below.
RTW501:
April 2014 - Insides of Trolleybus 1521 and 1201 at East Anglia Transport Museum. 6 of 7 shots.