File photo dated 16/5/2014 of celebrity chef Jamie Oliver who has teamed up with musicians including Ed Sheeran and Professor Green in his latest campaign. PRESS ASSOCIATION Photo. Issue date: Thursday May 14, 2015. The star published a video on his Facebook page showing him working on a song in support of his plan for a food revolution day which aims to put food education on the curriculum. See PA story SHOWBIZ Oliver. Photo credit should read: Anthony Devlin/PA Wire