Bauarbeiter und Touristen sitzen vor einem Café am Londoner Bahnhof St. Pancras International. DAVID MANSELL

Two construction workmen wearing their hard hats and high visibility clothing sitting down at one table, and at another table a young man and woman are reading a London map, outside at a cafe at London's St Pancras International Train Station. The railway and tube systems are one of the greatest British engineering achievements, enabling millions of passengers every day to travel across the country. DAVID MANSELL