Ms Tiffany Derrick is Head of PE at St. Swithuns. She has a full head and face of hair, with thighs like a Silverback gorilla. She likes to drive an articulated minibus at the weekends. THE PE DEPARTMENT Ms Bryan Martin is the eager Vice to Tiffany's Head. She is a ginger-haired dynamo with granite gluteals and a pigeon chest. She likes to watch Ms. Derrick driving an articulated minibus at the weekends.   PE DEPARTMENT   "Counting throws up new challenges for Ms Martin and Ms Derrick in... Episode Nine"       "Live at the boat race the PE teachers check out some extra-ciricular activities in... Episode Ten"       "It has to be heard to be believed, that's PE Department... Episode Eleven"       "Miss Derrick delves into her deep dark past in... Episode Twelve"       "Dick's Den cause problems for the PE Department in... Episode Thirteen"       "Miss Martin finds herself in Sophie Ward in... Episode Fourteen"       "Miss Derrick hears tales of chocolates and leg irons in... Episode Fifteen"       "Miss Martin trys to get ahead... Episode Sixteen"       "It's life and death at stake for our PE teachers in... Episode Seventeen"     Previously on PE...