I came across this interesting story and thought it worth adding here.
Thomas George Harrison was a Gloucestershire man at the time of the ABW - Selsey, near Stroud - but settled in Lichfield, Staffordshire, after being stationed at the nearby Whittington Barracks post-war. He had been awarded the QSA and KSA.
"It is interesting to note that, after being presented with his two South African campaign medals, Mr. Harrison lost them in Lichfield. He was stationed at Whittington Barracks at the time of the loss, and despite an intensive search, was unable to recover them. Forty-five years later, in 1946, his King's Medal, awarded for service in South Africa, was returned to him, it having been picked up in Bore Street by a small boy after the annual Remembrance Day parade service in the Cathedral, which had been attended by many war veterans. The deceased, naturally pleased at recovering his medal after so many years, was, nevertheless, disturbed at the thought that someone was still in possession of his Queen's Medal, of which he was rightly proud, and which was inscribed with his regimental number, rank and name."
Lichfield Mercury, Friday 24th October 1947
Thomas Harrison died in Lichfield on the 12th of October 1947, aged 69. He was survived by his widow, five sons and five daughters.
The medals must have been stolen by someone at the barracks who hadn't served in South Africa, and who was living in the Lichfield area in the 1940s. If the KSA is still in the possession of the Harrison family, they may not be aware of the missing QSA.