School for Secrets AKA Secret Flight
(1946, Ralph Richardson, Raymond Huntley)
Steve DeBank at Britmovie.co.uk provided these screencaps of two austerity Duple-bodied Bedford OWBs serving as school transport. KPA836 was new in 1945 to W S Hunt of Leatherhead, in whose livery it is seen here. JPL744 was new in 1944 to West of Woking, but it has no fleetname here.