Welsh steam coal was in high demand among steamship companies in England. Well-connected train transport was essential to meet this demand, which consequently led to the construction of the Severn Tunnel. Thomas Andrew Walker oversaw the project and expanded the site at Sudbrook (1880-1886, Wales) into a village with basic provisions for the navvies. However, navvy villages in New Passage in Gloucestershire were tainted by disease and unsanitary living conditions. Mead’s article investigates the problems the navvy settlements faced and their impact on New Passage and Bristol.