[Energumen]

And you were quite right my Friend, us bussies nicked the term, which was originally used for those RAF Trailers as shown, the Queen Mary's of their day.

Interesting thing about the last picture in the Lichfield gallery, that looks suspiciously like a BMC, Austin probably, and not a ford. What say you?.

Regarding Lichfield airbase, I assume that would be what is now a sadly deglamourised Fradley Park Distribution hub, where the hangers are used by various part load, (by pallet), carriers and a multiplicity of drivers from all over britain, who seem to relish breathing in dust and noxious fumes from a mad house of flying forklifts, as they transfer loads for onward shipment.
Got the tea shirt. It's filthy ha ha.