When CMAT wrote a song about hating Jamie Oliver, the last thing she probably expected was for him to agree to appear in the music video. But the celebrity chef put the 'beef' back in the fridge and was apparently "up for anything" when filming the video for the track The Jamie Oliver Petrol Station. In the song, CMAT - real name Ciara Mary-Alice Thompson - voices her frustration towards Oliver, singing "God, I hate him" Eilís Doherty directed the video and said she was shocked at first that he agreed to take part. "But I also was like, he's a smart man, because I think being able to laugh at yourself in that way is so powerful," she said. "I think his daughters are big CMAT fans, so they probably had a wee word with him to do it as well." In the music video it cuts between the Dublin artist performing in a stylised, retro-inspired studio and Oliver working in a busy restaurant kitchen, before the two worlds come together as he joins her on the drums.…