“Watching someone very close to you suddenly lose their independence is heart-breaking."

When Jason Grimshaw found out his sister-in-law had suffered a stroke he was beside himself.

He had always thought of her as a strong woman, but watching someone close to him lose their independence was heart-breaking.

She lost the ability to walk and do basic tasks.

But inspired by the courage he has seen from her, the 50-year-old from Purley is taking up the challenge of running the London Marathon as a way to raise money for the Stroke Association.

“I’ve never done anything like this before," he said.

"It has been tough pounding the streets over the winter months but I have had lots of encouragement from experienced runners and all the people who have sponsored me, which has really helped me keep motivated.

“I keep coming back to the fact that a few achy joints is nothing compared to what many stroke survivors have to go through, and I am sure that thought will help keep me going when the going gets tough on the big day."

So far Mr Grimshaw has raised just more than £1000.

Events officer at the Stroke Association, Emma Evans, is looking forward to seeing him cross the finish line.

"Around 1.2 million people in the UK are living with the devastating impact of stroke," she said.

"We’re thrilled Jason is taking on this challenge to raise vital funds for the Stroke Association and we’re looking forward to cheering him on as he makes his way through London.

“A stroke can happen to anyone at any time and it turns lives upside down.

"With the support of people like Jason we can help more stroke survivors and their families rebuild their lives.”

To sponsor Mr Grimshaw, click here.