The Graham Norton Show.Speaking at the Hay Festival on June 1, the actor opened up about her past experiences on the popular talk show, in which she has appeared alongside stars such as Stanley Tucci, will.i.am and Matthew Perry.However, there was one celebrity who Margolyes claims “wasn’t friendly”. As reported by The Independent, the Harry Potter star “disliked” her experience of meeting singer Lily Allen.The two were on a 2014 episode of chat show, appearing alongside actor Dominic Cooper.Speaking about her experience meeting the ‘Smile’ singer, Margolyes said: “She thought when she was on the programme that it was all about her”.She continued: “She thought, ‘Who is this woman? Miriam who?’”Margolyes elaborated on her opinion, suggesting that she regrets her reaction.