Hi Drew,
I know of another TED20, ex-army, 11BY19, but built earlier, in 1951. They were used around camps, bases, workshops etc. for mundane tasks such as mowing and ground maintenance, also towing industrial trailers around. The REME workshops that I worked at had a Massey Fergie 35 Industrial and all it did was tow the scrap metal trailer from the workshop to the dump every day. It did have another role, but rarely used for it, a Klaxon and siren were fitted to it and in the event of a general alert the tractor had to be driven around with sirens blaring.
regards, Richard