Jamie Oliver wished his followers a Happy New Year with the help of two mischievous and funny boys – his sons Buddy, ten, and River, four.MORE: Jamie and Jools Oliver & Prince William and Kate Middleton have the same home featureIn the 15-second clip shared on Instagram Stories, the chef, 45, could be seen wrapped up warm whilst his two sons jumped around behind him on their trampoline."Happy New Year guys! Say Happy New Year," the father-of-five told his fans.