Unseen London Rathayatra clip from 1973 (1 min. video)
Manorama dasa: I found this 1973 London Ratha-yatra news video by British Movietone / now Associated Press. Footage shows Srila Prabhupada walking in the parade, along with various early UK devotees from that time. Devotees dancing in the kirtan at Marble Arch, then the procession on the way to Trafalgar Square.
Watch it here: http://bit.ly/2oCyUVQ