James will be running the London Marathon this year on behalf of Action Against Hunger.
Ollie had been booked to do the same race but a wretched knee injury has knocked him out the competition at the 11th hour - he'll now be running the Venice marathon in October.
Five million children die of hunger-related causes every year. Action Against Hunger runs programmes in over 40 countries, saving the lives of malnourished children and providing communities with clean water and sustainable solutions to hunger. Any money you donate will help save lives in places afflicted by drought, natural disaster and chronic hunger. We hope you can help. Thank you.