Try outs were held at the city’s O2 Arena on Saturday, Monday, Tuesday and Wednesday with a range of guest judges joining the panel.
Former X Factor champ Leona Lewis, up and coming star Rita Ora and axed US X Factor judge Nicole Scherzinger all joined Gary, Louis Walsh and Tulisa on the show over the week.
Speaking about the first few try outs of the new series, Gary said: “I reckon I’ve seen three potential winners in the last two days.
“We’ve had a good few days in London actually and we’re feeling really positive about the whole thing.”
The X Factor 2012 auditions continue in Manchester next week, where former Spice Girl Mel B is expected to guest judge.
