I was stationed at RAF Thornhill (5 FTS) S. Rhodesia in 1951 - 53.
When the Rhodesian Air Training Group closed in October 1953 flying clubs in South Africa and Australia realised that the many surplus RAF Chipmunks now on offer were an economic alternative to the purchase of new aircraft.
Eleven used ex RATG Chipmunks were imported into Australia via South Africa. They proved so popular that when the RAF released further aircraft in 1956, W.S. Shackleton Ltd were appointed to purchase Chipmunks on behalf of the Federation of Australian Aero Clubs. In total some 80 ex-RAF Chipmunks were exported to Australia.
I don't know whether any of the 1956 surplus Chipmunks reached the UK register, but I know that many of the RATG Tiger Moths surplus to requirements when they were replaced by Chipmunks in 1951 were offered for sale locally at £5 each, but the take-up was poor and most were broken up for scrap.