Sleeping on a cold brick floor surrounded by crawling bugs was the Children In Need challenge faced by a crew of lifeboat men.

The group of five, from the Anglesey's Trearddur Bay station, spent a weekend marooned on a rocky islet.

Their castaway ordeal, which lasted from Friday afternoon to Sunday, was organised to raise as much money as possible for charity.

"I am very tired, it was cold, smelly and there were all sorts of bugs out there, " said organiser Dafydd Griffiths.

"On the first night we couldn't understand what all this stuff dropping on us was.

"On the second night we put the light on and saw them, they were like earwigs but bigger - I cringe now thinking about it.

"If we had seen them on the first night, we wouldn't have slept in there," he added.

Our partners think we are mad for what we did Dafydd Griffiths

The group's accommodation on the islet, known locally as the Beacon, was a 18th century tower used by sailors as a shelter.

It was once used by a shipwrecked sailor and now the small island is home to a range of wildlife, including seals.

The group of volunteer lifeboat men, including Terry Pendlebury, Elwyn Williams, Richard Roberts and Lee Duncan, ate tinned meals and some of them fished to pass the time.

Mr Griffiths, a self-employed plumber, said their night's sleep was also interrupted by howling seals.

"All of us sat bolt-upright when they howled," he said. "Our partners think we are mad for what we did."

Mr Griffiths said it was his idea to spent a weekend as castaways.

"It was a drunken night out and the idea was not very well thought out. We will have to think of something different for next year.

"I was glad to get home, you don't appreciate things like hot running water," he added.

The group raised around �550 for BBC's Children in Need appeal.

Last Friday's event saw more than �15m being raised, beating the record �13.5m total from 2002.

This year's evening concert was based at Cyfarthfa Castle in Merthyr and the total raised so far in Wales is �601,134.