and at derelict houses in the area. Lieutenant Colonel Herbert "Blondie" Hasler, RM, the leader of the real-life raid, was seconded to Warwick Films as a technical advisor. Ex-Corporal Bill Sparks, the other survivor of the raid, was also an advisor. "It was not a happy picture at all," said Forbes. "Ferrer was a megalomaniac." The film briefly uses several railway locations including the level crossing (Military Road) adjacent to Fort Brockhurst railway station on the (by then "goods only") Gosport branch in Hampshire. The station buildings and former platforms survive today as a private residence. As he cycles south, Ferrer has to wait for a passing northbound train (a van hauled by LSWR T9 class locomotive 30729) so he takes the opportunity to abandon his bicycle in favour of a ride in the rear of a fish lorry. Later, Ferrer steals the fish lorry only to abandon it at Shepperton Station (Surrey) in order to catch a just-departing Up train allegedly to Portsmouth, steam train noises being provided on this otherwise electric branch. In another sequence, David Lodge ducks out of sight into a brick bus shelter alongside the North Woolwich Branch. This was possibly at the footbridge opposite Fernhill Street on Albert Road, west of North Woolwich station. David Lodge is also filmed running over the road bridge adjacent to Chertsey railway station where a Southern electric train can be seen drawing into the Up platform. The film location where Marine Cooney leaps off a road bridge into a coal wagon (within a Southampton-bound goods train hauled by an LSWR S15 class locomotive) is Chertsey Road, Addlestone, with Egham Hill and Chertsey in the background as well as Addlestone Cemetery beyond the two fields to the left of the railway line. Now numbered the A318, Chertsey Road and this location are almost unrecognisable following road realignments for the building of the A317 St Peter's Way along with subsequent property developments. Trevor Howard and David Lodge nearly drowned while filming a sequence in a canoe when the canoe overturned. During production the film was sometimes known as Survivors Two. The then-famous British singer, Yana (Pamela Guard), is shown in a cameo role as a sweetly-singing blonde Wren (Women's Royal Naval Service member) in a pub scene, shortly before a brawl erupts. In order to get permission to film in Portugal, Warwick Films had to make a documentary about the