The helipad will help save the lives of people living, working and commuting in London by significantly reducing transfer times to the Major Trauma Centre at St George's Hospital.
Patients with serious injuries, such as those caused by road accidents, shootings, stabbings, major burns and falls from height can be treated more quickly, rather than being taken to hospitals further afield, often flying over St George's.
The HELP Appeal, which has provided a grant of £1 million towards the construction of the helipad at St George's Hospital, is a charity established by the County Air Ambulance Trust.
It relies entirely on charitable donations and is raising much needed funds to help finance helipad facilities at key emergency departments across the county.
The Appeal provides non-repayable grants to hospitals looking to build their own helipads or update existing facilities.
More top news
Controversial police chief Cressida Dick was today named Scotland Yard's first woman Commissioner.
Police accidentally sent letters to seven people killed in the Croydon tram crash, inviting them to a survivors meeting.
The exhibition includes the gown she wore when she danced with John Travolta at the White House and a dress used for a Vanity Fair cover.