Along with fellow British actors Ian McNeice and Kenneth Branagh, McNally appeared in two Second World War films, Valkyrie and Conspiracy, that depict behind the scenes activities of high ranking officials in نازی آلمان. Other television credits include: Z-Cars, The Bill, Casualty, The New Statesman and Murder Most Horrid. McNally also co wrote several episodes of the television series Minder and Boon in the 1980s.