The head of the BFI Film Fund has resigned to return to being an independent producer. Tanya Seghatchian — who famously discovered Harry Potter for Warner Bros — has been in what many consider the plum job in the British film industry for the past four years, doling out money to indie producers. I’m told she felt increasingly constrained by the limits being put on her as head of the $28 million-a-year fund. Seghatchian was previously head of the defunct UK Film Council fund, where she enjoyed greater autonomy. Brit producers have grumbled that Seghatchian has always favored art films over more popular projects. Projects backed by her include Bright Star, Fish Tank and The King’s Speech. She backed Andrea Arnold’s Wuthering Heights and Steve McQueen’s Shame, which both won awards at Venice last weekend. I also hear that she had a scratchy relationship with her boss, BFI CEO Amanda Nevill. “She was the wrong person in the wrong job in the wrong organization,” one film company executive tells me. “On the other hand, she’s got a lot of energy and great taste, which is just what you need as an independent producer.” Seghatchian was unavailable for comment.