Michael Portillo joins Navy Wings pilots for a spectacular close formation flight in the skies over Royal Naval Air Station Yeovilton. He also visits the magnificent Elizabethan mansion of Longleat, seat of the Marquesses of Bath, to find out about the estate's remarkable survival after the Second World War. At Chippenham in Wiltshire, Michael pays a call on a signalling manufacturer that has been at the heart of British railway projects for decades and has a go on the centre's simulator, driving the Elizabeth Line train to Paddington.