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6 year old Jack Brown suffers from neuroblastoma, which attacks the nervous system.

Jack Brown

There鈥檚 no treatment available for his condition in this country.

So his parents - who are both officers with the Metropolitan police - packed up the family and took Jack to America for treatment.

But the treatment is expensive, and has cost over half a million pounds so far.

Jack鈥檚 parents are also hoping to hire a UK based scientist to help work on a cure for the disease.

So the officers from Romford headed to New York for a 36 mile run through Manhattan- in uniform, to try and raise cash.

They were joined on the 2-day run by officers from Newham, Waltham Forest, Tower Hamlets, Hackney, and accompanied by the New York Police Department (NYPD) as they made their way through Central Park.

To see how the trip went click on the box at the top of this page.