Doc Martin S02E02 - In Loco

Louisa is eager to be promoted to head teacher, but her chances are threatened by a spate of sickly children and a frosty relationship with the board of governors, including a surly Martin. Mrs Cronk scalds herself at the fish and chip shop and has to put Bert in charge. To everyone's amazement, the business does a roaring trade - but Al suspects his father is cutting corners.