A tour de force (what we’ve all come to expect from London’s most decorated guide). It’s an extract from Fiona’s exploration of the Jubilee Line in the Underground Overground – Exploring London by Tube Virtual Tour series. She ranges across the Millennium Dome (and Richard Roger’s work generally), a very special graffiti artist and, wait for it, the Enigma machine. It’s a London smorgasbord par excellence.