Portsmouth Austers
According to "British Airports" by J W R Taylor, published by Ian Allan in - I think - 1964, the following Austers were listed as being resident. Don't know how many were operated by Portsmouth Aero Club, but possibly you may recognise them ?
G-AIGF, Auster J/1N
G-AJIS, Auster J/1N
G-APKD, Auster J/1N
G-ARUG, Auster J/5G Autocar
Richard.