The Evening Standard If I had been around 100 years ago, I would have been a male impersonator in the music halls, says Kathy Burke. Instead, the 21st century’s answer to Vesta Tilley has strutted her trousered stuff as the smaller, but stroppier, half of that wonderfully dopey duo Kevin and Perry for the delectation of the telly-watching nation. “It’s a great liberation for a woman to play a man’s role: I’ve been asked to play a couple of blokes on telly since Perry, and I was quite flattered, really. I said no because physically it’s quite painful, know what I mean?” she adds, miming an excruciating clamp-down in the…