Gillian Anderson will soon be another ex in The X-Files.

With her contract up after next season, her daughter now six years old and her plans for a London stage debut in the works, Anderson tells London's Sunday Times that Dana Scully is turning in her badge after next season. After nine years in her Emmy-winning role as the straight-laced FBI agent, Anderson, 32, says she plans to star in a production next summer in London's West End. She's mum on the details, but adds that "the stuff I am going to do is as far from Scully as humanly possible." But more importantly, Anderson says she's leaving Chris Carter's long-running sci-fi hit so she can spend more time with her daughter, Piper (born in September 1994 to then-husband, X-Files production designer Errol Clyde Klotz). With The X-Files requiring 18-hour days, Anderson said she often felt guilty about trying to find time with her daughter. "Now, when I am with her, I don't work," she told the Times. "But for the first seven [years of the] series it was very difficult. She spent a lot of time on the set. We all operated under the illusion that was enough. I found a way to come back to the caravan for 20 minutes while they were setting up lights to try to focus on her totally, but when you are five minutes away you get distracted, thinking about the dialogue. She wouldn't tolerate it anymore. She had a really hard time. The news of Anderson's impending departure is hardly surprising, given that she's talked about leaving for the past few seasons. "Physically, psychologically, I don't think I could do another season," she said in 1999. "I'm just spent." The exhaustion, however, didn't stop her from signing a deal last July that locked her into the series for another season. Meanwhile, her former partner, David Duchovny, appeared in only a handful of episodes last season and said that he's sworn off any more appearances. Scully picked up a new partner in by-the-numbers G-man John Doggett, played by Robert Patrick.