Alistair Petrie is a British actor. He has starred in films such as The Bank Job, Cloud Atlas, Rush and Rogue One: A Star Wars Story and television series including Channel 4’s Utopia, BBC’s The Night Manager, Sherlock and Undercover. More recently, he played the headteacher Mr Groff in the Netflix comedy-drama Sex Education, which returned for a second season on Friday, and is available to stream on Netflix now.