Nugget 99 - I'm surprised you could 'hear' the silence over the noise of the air conditioning in the VC10 crew only accomodation (the only aircon on the island in the early 70's).
In 1960-61, the Electronics Centre was air conditioned. For the benefit of the electons, not the 'umans.
I spent time up the rear hatch of a Valiant, working up a sweat, and then carrying the removed kit into the Electronics Centre, to be hit by the icy blast of the air con.
Bl**dy freezing it were.