Alex Kingston: Matt Smith was right to quit Doctor

ALEX Kingston has said that Doctor Who star Matt Smith has made the right decision to quit — before he gets typecast. The actress, who plays the Time Lord's love interest River Song, said: "You have to move on, otherwise it becomes very difficult." Matt, who became the 11th incarnation of the Doctor in 2009, will leave the BBC sci-fi show at the end of the year. She also revealed that she knew Matt, 30, was going to quite before it was announced. She told The One Show last night: "I wasn't surprised, because he and I had a chat. "At some stage, you have to move on and we did discuss when would be the right time in a young actor's career if they were very associated with a particular role."