Robert Downey Jr has helped raise more than £1million for a British hospice by raffling off a date with himself to his latest film premiere. The Ironman actor promised to fly a winner and a friend to Los Angeles to join him on the red carpet for the world premiere of Marvel's Avengers: Age of Ultron. His offer - which also includes a gown or tuxedo fitting and a helicopter ride - was up for grabs via $10 (£6.80) raffle tickets and raised money for children's hospice Julia's House. Scroll down for video . Robert Downey Jr has helped raise more than £1million for British hospice Julia's House . Dorset-based charity will now use the money to build a new hospice in Wiltshire . It raised £1,388,863 for the Dorset-based charity, which will now use the money to build a new hospice in Wiltshire. Speaking in a video promoting the prize, the actor said: 'Have you had the best night of your life on earth ever yet? Well you could, with me, for a good cause. 'Here's the deal - you donate ten dollars or more for a chance to win the RJD experience. 'I correspondingly fly you and a friend to LA, put you up in a five star hotel and proceed to awesome the crap out of you. 'I'll take you indoor skydiving, on a helicopter tour, a pit stop at Randy's Donuts and after riding your sugar high all the way to a fitting for a tux or gown, we are going to meet up for a bit of pre-premiere caviar. 'We'll giggle, chat, take pictures, and perhaps even engage in a battle of wits - kidding, or am I? A still from the video which Robert Downey Jr recorded helping to raise more than £1million for Julia's House shows a worker at the hospice interacting with a child . The raffle was hosted by Omaze, an American organisation that supports charities . 'And then right before sunset we make a grand entrance at the venue on the red carpet, and then you become one of the first people on earth to see Avengers: Age of Ultron. 'All proceeds go towards funding Julia's House. This place is amazing. It's a hospice for children with terminal illnesses. It's a win-win.' Downey Jr heard about Julia's House after he attended a fundraising event at the home of film director and Julia's House patron Guy Ritchie. Martin Edwards, CEO of Julia's House, said: 'We are so grateful to Robert Downey Jnr for helping with our dream to increase our respite and end of life care and reach more children over a wider geographical area, principally by building a Wiltshire children's hospice and extending our home care in the county. 'We'll giggle, chat, take pictures, and perhaps even engage in a battle of wits' he says . 'It's amazing when someone in so much demand is so focused on giving something back. 'He's our superhero - we love you Iron Man.' Winners were chosen and privately notified on Tuesday April 7. The raffle was hosted by Omaze, an American organisation that supports charities by offering celebrity experiences for 10 dollar raffle tickets. Downey Jr heard about Julia's House after he attended a fundraising event .
Raffle raised £1,388,863 for Dorset-based charity Julia's House . Winner to join Ironman actor for Marvel's Avengers: Age of Ultron premiere . Charity will use cash to build a new hospice in Wiltshire .