Some years back (probably 20+ years by now!!) there was a booklet produced (A4 sized and fairly thick!) with all the VGS's and their histories ..... Not sure where my copy went ...but somebody may still have one somewhere!
Never heard of that; I'd love to get to see a copy.
I was 'terminated' as a Wing Gliding Liaison Officer in 1998 so I kind of lost touch with things.(I was too successful - I got to go to Buckingham Palace for Royal Garden Party and my wingco didn't and he didn't like it)