A step back in time: What London Underground passengers looked like in the Seventies and Eighties

Bob Mazzer said Tube passengers were a rich source of inspiration for his photographs -

Forget New York and its Subway and Paris with its Métro, the London Tube network is the world’s oldest underground transport system.

Part of London life for more than 150 years, the service has evolved to cover 272 stations and 11 lines, and carries 1.3 billion people every year.