In 1983, he raised £20 million for the creation of the National Spinal Injuries Centre at Stoke Mandeville Hospital in Aylesbury, Buckinghamshire, and was a regular volunteer there.
Sir Jimmy was born in 1923 in Leeds, the seventh child of bookmaker's clerk Vincent, and housewife Agnes – the woman he always refered to as "the Duchess" .
As a teenager he started his working life as a miner in Yorkshire – and narrowly escaped death when an explosion left him with spinal injuries.
Doctors told him he would never walk again, but he recovered, and was back on his feet three years later.
He moved on to the entertainment business and and established himself as a DJ, and hosted the first ever edition of Top Of the Pops.
In the Seventies, the star started a 20-year run as the host of Jim'll Fix It – making dreams come true for over 1,500 children.
One of his most famous 'fixes' was for Nigel Kennedy, a talented youngster, who dreamed of performing on TV. The appearance had the desired effect – he went on to become a celebrated violinist.
In addition to his day job, Jimmy competed as a semi-professional sportsman – as a wrestler and cyclist.
Of his sporting endeavours, he said: "If you look at the athletics of it, I've done over 300 professional bike races, 212 marathons and 107 pro fights."
"No wrestler wanted to go back home and say a long-haired disc jockey had put him down.
"So from start to finish I got a good hiding. I've broken every bone in my body. I loved it."