The Prince of Wales launches the Brighton-to-London Eco-Car Rally today.

Charles will attend a pre-rally demonstration of the eco-cars at Hampton Court Palace ahead of the event itself tomorrow.

He will be given a chance to test-drive the vehicles, powered by hydrogen fuel cells, hydrogen internal combustion engines, hybrids and biofuels.

A number of other eco-vehicles will also be on show, including scooters, vans and rickshaws.

The Brighton-to-London rally is being staged by Revolve, a group promoting sustainable transport.

The Prince is due to arrive at Hampton Court at around 2pm.