A group of sporting volunteers are preparing themselves for a testing charity marathon as they attempt to play 24 hours of non-stop tennis.

The ambitious fundraisers are all members of Cromer tennis club and will play out their mammoth game on both grass and hard courts from 2pm today.

They aim to keep two doubles matches going for the full 24 hours, rotating players in and out giving them a chance to rest between sets. Their games will also be mixed up, including a 4am coaching session to keep them on their toes.

Danny Holdom, manager of the club in Norwich Road, is among ten members who will be taking part in the epic game, which is hoped will raise �1,500 for the East Anglian Air Ambulance.

He said the team was most concerned about the lack of sleep.

'It's going to be quite hard work, everyone looks like they're going to be doing 18 - 19 hours (of playing) each,' Mr Holdom added.

'We've got a couple of camp beds in the function room and then we're just hoping that energy drinks and a bit of food will get us through.

'I think there will be people turning up as and when who will hopefully dip into their pockets. It's obviously just such a good cause and we thought it was a charity we should be giving to.'