From the main road to the front door, the area surrounding the property is lined with paver stone and protected by a gated entry and security system.

FORBES: Bruce Willis Lists $15M Lakeside Ranch in Idaho

Instead, they are buying stripped-down entry level vehicles with weak security features in models like the Volkswagen Gol, Fiat Palio and the Chevrolet Celta.

FORBES: Why Chryslers Are So Crazy Expensive In Brazil

Mr Islam said the decision to deny him entry on grounds of national security was "very serious and wholly unfounded" and he wants an explanation.

BBC: NEWS | UK | England | London | Cat Stevens to take legal action