In article ,
David Looser wrote:
It's quite possible the BP circuit was routed through AP.


Nope. BP came into service in 1930; whilst AP wasn't even chosen to be
the site for the "high-definition" service until 1935. I've never
heard any suggestion that cables to BP were re-routed to go via AP
after 1935 and there would have been absolutely no point in doing so.
BP was a MW radio transmitter whilst TV was broadcast only from AP. BP
did not, could not, broadcast TV sound. The pre-war TV service from AP
was very largely independant of BBC radio, but if they did need to link
up with the world of BBC sound radio they had direct lines to BH.

Should have put a question mark after my comment.

Lines were always a bit of a mystery to me - handled by someone on the end
of a phone. Can't ask my pal about it either - he's no longer with us.

--
He who laughs last, thinks slowest*

Dave Plowman London SW
To e-mail, change noise into sound.