Chat show host Graham Norton is the latest celebrity to back London's Air Ambulance's Your London, Your Helicopter campaign, calling for a second medical emergency helicopter for the capital.

Larry Lamb, Twiggy and Richard Branson have also voiced their support for the campaign, with Lamb commenting 'I'm hugely proud and full of admiration for the doctors and paramedics at London's Air Ambulance who work tirelessly around the clock to save lives. One of those lives might someday be mine or someone close to me, so I am committed to helping make sure London's Air Ambulance always has a helicopter available'.