There is still time to sign up for the chance to win £1,000 in the first Oxford Children's Hospital Lottery draw.

About 650 people have already joined the game, hoping for a chance of victory in the maiden contest on June 17.

Organisers have been drumming up support this week at the Mini factory in Cowley, hoping to attract some of the 4,500 workers.

Money made from the weekly £1-a-game event will go towards the £15m appeal for the dedicated paediatric unit, which is already being built at the John Radcliffe Hospital, Headington.

The lottery, which was launched in April with help from the Oxford Mail's parent company Newsquest, could boost the hospital campaign by £570,000 during the next three years.

Children's Hospital campaign development director Veronica Warner said: "So far only 650 people have signed up for the lottery, which is disappointing.

"We're not sure why this is and hope people are waiting until closer to the draw before registering. We really want to urge our supporters and the many people who fundraise for the charity to sign up and get their friends and family to sign up.

"This is such an easy way to give and also has the opportunity of winning a little something for yourself!"

As well as the £1,000 jackpot, there is a £100 second prize, two £50 and two £25 payouts.

Players can join by completing coupons in the newspaper or calling the lottery hotline 0870 0501692. They can pay in advance for a specific amount of numbers and games.

Players get a five-digit number for every £1 they spend, and the winning number will be generated at random by a computer every Friday. The winners will receive their prizes the following week.