A Letchworth schoolboy overcame the news of his brain tumour’s return to help man the phones on a star-studded charity fundraising day in London.

The Comet: Leon Woolcott with chef Jamie Oliver.Leon Woolcott with chef Jamie Oliver. (Image: Archant)

Leon Woolcott, who attends Grange Junior School, joined a myriad of stars including Jamie Oliver, Jonathan Ross, Jimmy Carr and Rio Ferdinand on brokerage firm BGC’s trading floors in Canary Wharf on Friday, September 11.

“I had been helping raise money for The Brain Tumour Charity and when I found out that the company where my dad works chose them for the charity day, I was so excited,” said Leon, who is 10.

“I met so many celebrities, including Jamie Oliver.

“I want to be a chef so that was great.”

The Comet: Leon Woolcott with chef Jamie Oliver.Leon Woolcott with chef Jamie Oliver. (Image: Archant)

Leon had a brain tumour removed when he was seven, but in March learned that it had returned.

Doctors have told the family that further surgery cannot be attempted until the tumour grows.

This was the 11th BGC Charity Day. Over $12 million was raised globally for a variety of causes, including The Brain Tumour Charity.

The day is held annually in memory of the 658 BGC employees who were killed in the 2001 World Trade Centre attacks.

“Traders and the City have a bad rep. But today proves that’s not always the case,” said Jimmy Carr, who hosted the charity day.

Leon’s dad Mark said: “I am so grateful.

“I would like to thank BGC for a fantastic event that helped so many charities and gave the families that attended a day to remember.”