[davidw]

Mike, yes Bildeston did have a flat roof and was built into the side of a hill. The roof was reinforced as it was deemed to be on the flight path of Wattisham.
I remember a Nadine being a wireperson when Kesgrave crossbar (plessey) was put in, late 60s.
Tim,you are right about the course time to dial tone,given that these units where 70s transistor tech with reed switching the complexity was incredible (at the time).
The PO spec HA van had a derated Viva engine producing just 24hp as opposed to the original 40hp , the workshop boys reckoned the camshaft had virtually no lobes!
The driving style was to use the throttle as an on off switch, idle or foot flat on the floor.
During my final days on the road they gave me a Fiesta..luxury..