Sitcom by James Cary, set in Bletchley Park in 1941. Three code-breakers are forced to share a draughty wooden hut as they try to break German ciphers. Unfortunately, they hate each other. Gordon invents a new form of computing device to help break codes. Charles ...... Robert Bathurst Archie ...... Tom Goodman-Hill Minka...... Olivia Colman Gordon ...... Fergus Craig Joshua ...... Alex MacQueen Mrs Best ...... Lill Roughley Ian Trent ...... Stephen Hogan.