According to British Independent Airlines 1946-1976, Island Air Services was formed by someone with the splendid name of Daughley Hills-Grove-Hills.
Pleasure flights from Heathrow were operated 1948-1956, 15 minutes for a quid ! Their Rapides were G-AESR, FFB, GJG, GSJ, IYP and LBB (which crashed at LHR in 1952). They also had 2 Proctors and a Consul.