Birmingham to Worcester

S7, E11: Every train ride begins with a whistle and Portillo's journey this time starts in Birmingham's jewellery quarter to the sound of the Acme whistle, manufactured there since 1884. A visit to the city's town hall reveals a magnificent organ and the location for a celebrated music festival. Travelling south to Kidderminster, he visits the Royal Mail sorting office and finds out about the great postal innovator Sir Rowland Hill. Arriving in Worcester, he discovers the origins of the British Medical Association.