A mystery voice which has been bugging radio listeners for seven months is out of the bag - earning one woman £23,675.

Jane Ely, 30, from Uckfield, won the biggest prize yet offered on Southern FM's Name Game yesterday after correctly guessing the voice was that of Olympic rowing champion Sir Steve Redgrave.

The voice behind the words "Who's that? Who's that?" has been driving listeners crazy since April as scores of people unsuccessfully tried to put a name to it.

However, it was Jane's husband Jason, 33, who guessed it was Redgrave while the couple were on holiday in the south of France in mid-October.

The only English-speaking channel they could get on their TV was CNN, which kept repeating an advert featuring the rowing champ.

While watching, it dawned on Jason the mystery voice in the radio competition was that of Redgrave.

When the pair got home Jason tried unsuccessfully to get through to the Name Game twice while his wife tried another ten times when he was at work.

Callers from all over the county have been jamming phone lines to have a try at guessing.

Jane did not manage to get through until yesterday when she finally made it on air, winning the prize just before 5pm.

Her answer brought to a close a frustrating run of daily pondering for thousands of people.

Jane, a full-time mother to Luis, 11 months, and an ex-secretary and British Airways cabin crew member, said: "I was expecting to hear the loser sound.

"But then, after I didn't, I was really, really shocked. I just can't believe it.

"Jason likes to think he is right all the time and now I think he has probably proved it."

Jason, an estimator for a partition company, said: "I was fairly confident it was Sir Steve.

"I listened to it going to and from work and kept hearing people making guesses that I knew must be wrong. I think I can take this credit."

The couple are planning to get the holiday brochures out, do some DIY and enjoy a good Christmas.

Jason said: "I would like to buy a Porsche but I don't think I'm going to get one."

Every time the Name Game alarm sounded, which was between five and eight times a day, listeners could ring in and have a guess.

More than 140,000 phone calls were made and more than 1,000 different names tried.

The prize money started at £1,000 but every time a caller got the name wrong another £25 was added.

Programme controller Tony Aldridge said he and his team, who were under strict orders to keep the owner of the voice a secret, were over the moon to have a winner at last.

But he said the team would not be playing a another Name Game until the middle of next year.

He said: "We all need a breather before we irritate Sussex again."