Imagine the perfect flying experience – no queues, a reclining seat, perhaps a glass of chilled champagne.

Add four-poster beds, a Turkish bath for four and somewhere to put the Rolls-Royce – not to mention a boardroom with holographic screens and a concert hall.

Then you’ve got a £300million flying palace – a superjumbo designed to order for a Middle Eastern prince. When complete in three years time, the converted Airbus A380 will be the world’s largest private jet.