A Deptford teen has decided to fight dirty against cancer.

At just 13, Lydia Wren has launched Cancer Research UK’s new Race For Life Pretty Muddy challenge, which will take place for the first time on June 21, at Stratford’s Queen Elizabeth Olympic Park.

Lydia was diagnosed with lymphoblastic leukaemia just before her eighth birthday in 2009 after her mum Claire Dove had taken her to hospital with pains in her legs.

Claire said: “As soon as the doctor asked me if she’d had bruises I started thinking that it could be leukaemia so when they told us it was, it wasn’t a huge shock.”

Lydia began two weeks of intensive treatment at Great Ormond Street Hospital, followed by two years of chemotherapy as an outpatient. She now only goes to hospital for a check-up every three months

Claire said: “Fortunately Lydia responded well to her treatment but it wasn’t always easy. She had infections and low blood counts which meant she had to go and stay in hospital, sometimes for several weeks.”

Lydia said: “It seems like being in hospital was a long time ago now. Thanks to research I’m here today which is why I’m encouraging women across London to fight back by taking part in Race For Life.

“I can’t wait to take on Pretty Muddy and I’m encouraging all women across London who want to show cancer who’s boss to join in.”

Take part in Race For Life’s east London events in either the Pretty Muddy, 5k or 10k at the Olympic Park on June 21 or Victoria Park on June 27.

Go to raceforlife.org or call 0300 123 0770 for more information.