Kathy Burke is one of our most popular actresses. Winner of the Best Actress Award at the prestigious Cannes Film Festival in 1997 for Gary Oldman’s lacerating Nil by Mouth, regular nominee and award winner in the TV comedy stakes, she could by now be pulling in the mega-bucks. She also taught me, “don’t just be involved as an actor in this business. Try and branch out and understand the other side of things”.’ Instead, here she is on a grey January evening, sitting in the bare dressing room of London’s famous Old Vic Theatre, solemn-faced, chain-smoking – a far cry from her larger-than-life comic creations – love-lorn Linda of Gimme Gimme…