TWO bikers will raise charity money when they visit the four extremities of the UK in the 'Numb Bum Run'.

Doc Pearce, from Bridport and friend Lee Smith will tally up funding for the Dorset and Somerset Air Ambulance, Diabetes UK and armed forces charity, the Soldiers, Sailors, Airmen and Families Association (SSAFA) when they take on the trek next month.

The duo will visit Ness Point in Lowestoft which is the UK's most easterly point, the most northerly point at Dunnet Head in Scotland, Ardnamurchan to the west, also in Scotland and Lizard Point in Cornwall as the most southerly location.

Mr Pearce is backing three charities which are close to his heart.

He said: "A few years ago I did Land's End to John O'Groats in a weekend but I haven't done anything like this for a while.

"This has been on the back burner for a while. Our challenge is to visit the most easterly, northerly, westerly and southerly points of the mainland UK."

He added: "I wanted to support the air ambulance because it's a local charity and my wife had an accident probably about nine years ago, and they did a fantastic job in picking her up.

"I wanted to support SSAFA, not only as an ex-Navy man myself, but they helped both my parents. I like them because they will help anybody, unlike other military charities who can only help certain people.

"I wanted to support Diabetes UK as my daughter was diagnosed with Type 1 diabetes when she was 14 months old. I just wanted to give something back form when we were initially panicking when she was diagnosed."

The petrol heads will be covering thousands of miles when they take on the challenge between Saturday, May 6 and June 14.

Mr Pearce added: "We will be averaging 250 to 260 miles a day.

"We have called it the Numb Bum Run as I'm assuming that's what we will feel like once we have finished it. In total, we are pretty sure it's about 2,500 miles altogether."

To support the charity challenge, visit virginmoneygiving.com/team/thenumbumrun