The film opens on Remembrance Day in Whitehall, as the war veterans line up to walk past the Cenotaph, then moves back to a conversation between Frank and his son at Robert's flat some months earlier, where Robert tells Frank that strange things are happening at GCHQ, and he's planning on leaving and marrying an older woman called Cynthia (Felicity Dean) with whom he's fallen in love.
•
His bright but naive and idealistic son, Robert (Nigel Havers), works as a linguist at GCHQ a top secret British intelligence listening station, using his love of Russian to listen to various pieces of communication on the other side of the Iron Curtain.
Anyone Can Whistle | whistle | The Old Grey Whistle Test | The Pig and Whistle | Toot, Whistle, Plunk and Boom | The Phantom Raspberry Blower of Old London Town | snow blower | Roots Blower Company | Whistle (Flo Rida song) | Whistle | Train whistle | train whistle | The Wichita Train Whistle Sings | Steam Whistle Brewing | So It Doesn't Whistle | '''Snow blower''' in Rocky Mountain National Park | Orangedale Whistle | Hancock air whistle |