Michael Portillo's railway journey through 1930s Britain from Canterbury to Skegness reaches Witham in Essex. Here he visits the factory of the world's oldest supplier of metal framed windows which became popular in the 30s.

Crossing into Suffolk, Michael alights at Ipswich and discovers the story of a group of child refugees whose history is intertwined with that of Michael's family.

In the village of Newbourne, over a pint with the locals, Michael hears the story of the rural resettlement scheme that helped over a thousand unemployed industrial workers from the north.

Last stop on this leg is Felixstowe, where Michael boards a boat to reach an isolated country house, where secret research was underway in the 1930s. When war came, the experiments performed here saved Britain from defeat.

Michael Portillo is in East Anglia on the last leg of his rail journey through 1930s Britain. He begins in Attleborough in Norfolk, at the headquarters of an international horse welfare organization which was established in the late 1920s and learns about the charity's pioneering founder.

Crossing the Fens, Michael's next stop is the cathedral city of Peterborough, where he visits a tidal defence barrier built in the 1930s, which helped save the city from flooding.

Heading north into Lincolnshire, Michael crosses the point at which The Mallard broke the speed record for a steam powered locomotive in 1938. At the coastal resort of Skegness, he visits the first all-inclusive, self-contained holiday camp which became a household name in Britain. Here Michael swaps his green blazer for a red one!

Michael's journey culminates at RAF Coningsby – an aerodrome which was conceived as storm clouds gathered across the Channel. Michael explores iconic aircraft from the Second World War, before being treated to a dazzling display featuring the RAF's latest combat aircraft.