Geriaviator
"complete with pictures of DF vehicle with what appears to be a huge TV aerial on the roof"
Vehicle shown in the link is an RV 105 (VHF/DF) vehicle which I operated early in my service at Bovingdon, Gan and Abingdon. They were superseded by automatic DFs from the mid 1950s onwards.
Here's what the one at Gan looked like 1958.
On arrival from UK
A bit of loving care and attention (with a 3" brush), primarily to keep the heat down.
The finished job
Here's the one at Abingdon.
