by Wilfred Greatorex.
A round-the-clock vigil is kept on Britain's ports and airfields by the men of H.M. Immigration Service.
A series of six dramatised documentaries.

Something unusual left on an airliner by one of air hostess Janie Campbell's passengers leads to an 'alert' at London Airport. Jim Howarth and other Immigration Officers must find the owner...
From the Midlands