The Pentrators By Anthony Gray first published 1966
It is, I have to say, utter rubbish.
ITV first started 405-line TV broadcasting from Emley Moor on 3 Nov 1956. The service was Granada TV on Band III Channel 10 (196.25 MHz sound / 199.75 MHz vision).
As for Vulcan ECM, it was pretty ineffective and had never been properly updated due to cost......