British singer Robbie Williams would dump his pop career to become an alien investigator, according to a new interview. The Angels star was being interviewed by soul singer Joss Stone for a British radio show - and even tried to enlist the 20-year-old's help in his search for extra terrestrials. He tells Stone, "Seriously, I want to go out and investigate these things. I'm stopping being a pop star and becoming a full-time ufologist. "We could be like (The X Files FBI agents) Mulder and Scully in real life. You're always mega-busy but I've got nothing on at the minute." Williams also claims he has been visited by aliens on at least three occasions, and witnessed a "big strip of black light" during recording in a studio in Los Angeles. But the 34-year-old insists he can understand if the public view his latest obsession with concern. Williams adds, "People will think, 'This geezer's been in rehab, he's off his head.' How mental are they going to make me out in the papers."