As late as 1973, our ULAS Chipmunks still had ancient 10-ch VHF sets, complete with utterly useless obsolete VHF frequencies.
That's interesting. Was VHF kept in order to fit in with the WW civil traffic? The UBAS Chipmunks were converted to UHF in the summer of 1968. This was a retrograde step as far as situational awareness went, since over 90% of the other Shawbury traffic was Marshall's fleet of Vampires and Piston Provosts, which of course, were all VHF!