Stick on a fake moustache. Add some glasses.  Dye your hair. And perhaps pop on a hat. If you are a man – or woman - on the run in the movies then this kind of low-tech disguise is all that is needed to evade the authorities.

But, in a case of life imitating art, a similar array of tactics seems to have met with some success in the real world.

One of the more bizarre news stories of recent weeks concerns John McAfee, founder of the eponymous anti-virus software company, going on the run from the Belize police