Boston to Hensall

S6, E12: Beginning in Boston in the flatlands of Lincolnshire, Portillo explores the connection between the city and its American namesake. At Southwell, he discovers the origins of the Bramley apple and learns how to make apple pie. In Menston, he visits an imposing institution built to provide asylum for those suffering from mental illness and learns how volunteers care for its once derelict chapel and graveyard. At Wakefield, he manages to board one of Britain's least frequent services and finds out what led to the birth of the parliamentary train. Along the way, he meets a former locomotive engineer who offers him the chance to drive a steam engine.