This five-year-old Lewisham boy will walk 14 miles across London to support kids with a rare cancer which he suffers from himself.

Little Louis Kayum was only three years old when he was diagnosed with neuroblastoma in May 2015.

The rare form of cancer affects children, usually under the age of five, and there are only about 100 children diagnosed with it each year in the UK.

He underwent 17 months of treatment at the Royal Marsden’s Oak Centre for children and young people where it has become a second home for his family.

Cat Kayum, Louis’ mum, said: “The Royal Marsden became a home-from-home for our family. The doctors, nurses, therapists, play specialists and support staff were all amazing.”

That is why Loius and his family walked 14 miles from the two Royal Marsden hospitals from Chelsea to Sutton to raise money for charity.

The walk has raised £10 million for The Royal Marsden Cancer Charity since 2011 and last year Loius and his family raised money than £2,000.

More than 5,500 walkers took part for the walk earlier this year and the next one will be on March 4, 2018.

Antonia Dalmahoy, director of The Royal Marsden Cancer Charity, said: “We are focussed on improving the lives of people affected by cancer and the Marsden March has become an event our patients, supporters and the community can take part in to help us achieve this goal.

“We are so proud the Marsden March not only raises money to improve the lives of patients at The Royal Marsden but also enhances the lives of cancer patients across the UK through the hospital’s pioneering clinical trials across all tumour types.

“Every one of our Marsden Marchers plays a vital role in our ambition to continue improving the lives of those affected by cancer.”

If you register before December 3, it is £20 for over 18's, £10 for 11 to 17 year-olds and under 10's go free.