Danny Johnson-Green's sons, Terry and James, were diagnosed with leukaemia within 24 hours of each other in November 2006.

In spite of a debilitating condition, he decided to make a 200-mile bike ride in March 2007 to benefit the cancer charity Clic Sargent.

Mr Johnson-Green has suffered from hemiplegia since birth -- the condition leaves him paralysed down one side of his body and makes simple everyday tasks painful.

"Every mile was a struggle," said Mr Johnson-Green.

"But I cycled the ride purely on adrenaline -- basically I was doing it for my boys and that was what mattered."

"I wasn't worried about the consequences."

An average healthy person could have completed a 200-mile ride in the course of a day -- it took Mr Johnson-Green four days as he had to stop every four miles for a break.

But Department of Work and Pensions (DWP) officials heard about his cycle ride and withdrew his benefits, which were meant to subsidise an adapted car.

"I was absolutely devastated."

"Not only were they taking money away that I need but they were taking away a car that was adapted to my needs."

"The ride was very important."

"It was about raising awareness of leukaemia and money."

"I want them to realise that they can't go around doing this to people."

The DWP have now demanded that he repays £2,600 of benefits.

Mr Johnson-Green is now planning to appeal the decision.

DWP officials have refused to pass comment on their handiwork.

"We are unable to comment on individual cases," said a spokesperson.

"Entitlement to Disability Living Allowance is not based on the diagnosis of a particular disability or illness, but on the care and mobility needs arising from the disability in each individual case."