South African Air Force did operate a Spitfire XVI until an engine failure and subsequent forced landing wrote it off a few years ago. But Spitfires being what they are, I have little doubt it will reappear in a few years time!
Incidently, three of the civilian pilots involved the in the US Heritage flight progamme, Steve Hinton, Ed Shipley and Dan Friedkin flew P-51s and a P-39 in formation with a Lakenheath F-15E at Duxford several years ago. No Lakenheath crews were suitably qualified, so a crew from Seymour Johnston AFB were flown across to do the honours!