Motor racing legend John Surtees OBE will be swapping the driving seat for the toolbox as he helps youngsters at Mudchute farm create go karts from scratch.
Working in teams of 10 they will create a non-motorised kart from wood, wheels and metal in just four hours – before putting them to the test in a race challenge.
London Play project manager Catherine Togut said the event targeted those in deprived areas while the 2013 task proved a huge success.
“The kids had a fantastic time and they had never experienced anything like it before,” she said.
“It was a great day. The children wouldn’t normally get the opportunity to learn these skills and it can be inspiration for the future.
“It’s both skills and confidence building on the day. And it’s getting them away from the TV with building and learning.”
Corporate volunteers from Canary Wharf firms including JLL, Bank of America Merrill Lynch and Canary Wharf Group will also be lending a hand.
John will round off the day by presenting the race-winning team with a day ticket to his Buckmore Park Race Track.