Recently back from getting a validation and renting at Algoa in Port Elizabeth -
www.algoafc.co.za
excellent place generally, (and socially), good aircraft, great weather and even better, extremely efficient at organising UK-SA validation paperwork in advance so it can be finished off quickly on arrival. I was completely legal and flying off by next lunchtime after arrival one afternoon !
Send them an email - I'm sure the address will be on that site and they know all the rules and regs - they have an expert.