A Koenigsegg CCXR worth £1.2m and a Lamborghini Murcielago worth £350,000 - both in the fetching colour of turquoise - were parked outside the Qatari's ruling family's latest acquisition when they were spotted by traffic wardens.

The cars were initially given tickets and then clamped, to the amazement of passers-by who gathered to watch.

The custom-made cars are part of the royal family's fleet of supercars.

The Qatari ruling family are behind the Qatar Holding Group which bought Harrods from Mohamed al Fayed in April for £1.5bn.

The business is led by the Qatari Prime Minister, Sheikh Hamad al Thani.

The al Thani family are worth around £2.5bn and have stakes in dozens of businesses around the world.

As well as their magnificent car collection, their assets include a fleet of multi-million pound yachts and luxury homes around the world.