There was a series of shorts made by the Rank Organisation called 'Look at Life'.
One of these was about 214 Sqdn doing the early tanker trials. A very young version of yours truly was featured
There was a special showing at the Marham 'Astra', but this happened while I was on leave and I never did get to see it.
If anyone knows if/where there might be copies of these shorts archived I would appreciate the information.