Colin Furze, 29, spent two months creating the incredible 14.03m motorbike, which can travel at speeds of up to 30mph.

He used two 50cc Honda Sky mopeds which he extended using pieces of aluminium.

"You can ride it like a normal motorbike but steering is a bit of a problem as it has just a small turning circle," said Colin, from Stamford, Lincs.

"It is quite heavy and difficult to handle and it would be hard to ride on the roads as you need about six widths of road to turn."

Gallery: the world's longest motorbike

Colin constructed the massive motorcycle in his back garden to celebrate his 29th birthday. He used his existing moped and bought another identical one which he took apart.

The final motorbike measures 14.03 metres and smashes the previous record of 9.6 metres.

To make it into the record books, Colin had to drive the bike 100 metres which he did on an airfield.

On why he did it, Colin said: "I thought it would be a cool thing to do and I'm thrilled to be in the Guinness Book of Records".

"I loved BMX bikes when I was a boy and then became interested in motorbikes and I thought it would be fun to break a world record.

"My mum Beryl was quite interested at first in what I was doing but by the time it was finished, she was glad to see the back of it. I was building it in the back garden and she had to climb over it to get to the garden and the bins."

Colin is now building an even longer motorbike, which he hopes will be almost double the length.

"I can't say too much at the moment as I hope it will break another world record, but it's under construction," he added.

It is not Colin's first world record; to celebrate his 28th birthday in 2007, he built the world's largest bonfire.