STEPHEN Riddle is gearing up to complete a 100-mile bike ride next month.

The 54-year-old is taking on the challenge for charity.

He will head to London at the end of July to ride the 100 miles for the Alzheimer’s Society.

It is Britain’s biggest bike ride and the Bolton man is doing it in memory of his mum, Joyce, who died a year ago next month, aged 90 after suffering with dementia in later life.

The retired police detective, a swimming instructor and triathlon swim coach, based at Horwich Leisure Centre, said: “I wanted to raise funds and awareness for the fight against this terrible disease.

"It was horrible to watch Mum’s health deteriorate as she bravely battled dementia.”

Before taking part in the massive Prudential Ride London event, he hopes to raise some money for the charity at a fundraising event at the Barlow Institute, Bolton Road, Edgworth, on Monday.

He has two official Alzheimer’s Society cycling jerseys signed by one of the legends of the sport, Chris Boardman, who won an Olympic gold medal in 1992 and three stages at the Tour de France in a glittering career.

The auction of the jerseys forms part of a ‘Puncture Party’ evening at the Institute, where there will be a raffle, as well as specialist bike fit advice from Carl Ashworth from The Bike Fitting Room in Bolton, and essential bike maintenance advice from John Spencer of The Green Machine bike shop in Lea Lane, Horwich.

The event starts at 7pm and tickets are £5, payable at the door.

Stephen has also created a JustGiving page at where donations to his appeal can be made.