I t’s a January chilly evening in a community centre in Gatley, a quiet suburb of Stockport. But underneath the glow of the hall’s overhead strip lights, a group of teenagers are also preparing for a moon landing. Or in the royal court of an imperious queen. Trekking in the Arctic. Screaming at a Taylor Swift concert. All entirely imaginary scenarios, of course. Especially the one where I have to briefly stand in for Taylor Swift. But the performers are so full of energy and conviction that it’s hard not to be transported along with them. “As soon as we step through the doors, put our phones down, I feel like time just stops here, do you know what I mean?” one of the girls tells me. “It’s like a break from reality.” This weeknight session is just one of the classes run by the Drama MOB , the Manchester drama school and talent agency founded by Esther Morgan and longtime Coronation Street actor Tina O’Brien.…