Bren, I think you and I need to be pensioned off to our own sad little thread on the nostalgia forum forever.....
WATford? I lived under it, the NDB (279 K/cs) was round the back of the Peugeot garage at Round Bush. At that time EGWX GCA was 130.7 or 117.9, a shared freq, tricky for Talkdown, although as you say they must've had an Xray discrete freq. Northolt were the funny ones, GCA 104.49, 116.46,132.84......
OK,ok, I do concede I had forgotten MYW, as I have also forgotten the Heathrow NBD 'Mike' coding. I can remember Bushmills MWN so must've been at Redbrae at the time......
Nerd, indeed, I am sure you in particular would like to see my 1959 Blackbushe approach plates. Or etchings.
Nurse, nurse, it's time for my medicine......