The Times The perfect connections: Gary Oldman, Harry Enfield, Meryl Streep. The perfect credentials: best actress gong, Time Out award, adoring public. Yet Kathy Burke is a lady unafraid to act unladylike. Two weeks ago, Kathy Burke was shopping in Waitrose on London’s Holloway Road. As she nudged her trolley along the aisles of fresh fruit, pet food and microwave dinners, she was stopped by a series of strangers. Some told the 34-year-old actress how much they laughed at her sex starved, wig-wearing harridan in Gimme, Gimme, Gimme, the sitcom which has just finished its successful run on BBC2; others, including one slightly stiff middle-aged man, congratulated Burke on her recent portrayal of…