Re the AMF glider trailer, ISTR they were procured by the ACO with no reference to proper MT procurement procedure, I was I/C MTMS at Newton at the time and when the first one arrived Syerston gave it to us and said get it registered. Support Cmd played along and did the business (they were not happy, but did). The adjustable tow hitch was a problem from day one, the tie downs inside always gave trouble, one glider was making its escape thru the back doors on the A1, when the crew were overtaken by another RAF vehicle and waved down.
The damage to the trailer in the advert was not the usual damage, failing to tighten the joints on the intermediate strut was more usual.
The other two wheeled AMF trailer was a nightmare, required careful load distribution to stop it snaking. The trailers "designer" AF himself came up to demonstrate its stability and frightened himself fa*Tless when towing behind a LWB LR. Had to issue sandbags to the ACCGS to ballast them.