As a slight aside from this, the RAF used to operate its own Comms Flights. In UK it was the station Annie before being brigaded in to regional comms sqn equipped with a variety of robust aircraft. As these vintage aircraft were retired they were replaced by the Bassett but clearly in smaller numbers.
Costs eventually led to the closure and mere aircrew travelling between units had to go by train. I asked one Nimrod pilot who was leaving to take up a job as an air taxi pilot how much it would cost. "The RAF couldn't afford it".
Moving on 10 years the air taxi service was used almost daily to ferry F4 and F3 crews up and down the east coast or to Warton. VIPs (down to 1*) also had call on the Squirrel as an air taxi.
I bet that has gone as a cost saver now and replaced with 2nd class rail (or posh staff car
