Upminster a number of windmills in Upminster and one of which, a smock mill built in 1803, remains. Local industry included a tannery, gravel extraction and a brick works that was connected to the railway station by a tramway in 1895. The London, Tilbury and Southend Railway from Fenchurch Street was extended from Barking to Upminster in 1885. The underground Whitechapel and Bow Railway opened in 1902 and allowed through services of the District Railway to operate to Upminster. The District converted to electric trains in 1905 and services were cut back to East Ham. Delayed by World War I, electrified
London Underground infrastructure although in some places, for example the Central line east of St Paul's station, tunnels are above each other. The running tunnels are on the right on the Victoria line between Warren Street and King's Cross St. Pancras, allowing cross-platform interchange with the Northern line between northbound and southbound trains at Euston. Six of the 32 London boroughs are not served by the Underground. All of these are south of the River Thames: Bexley, Bromley, Croydon, Kingston, Lewisham and Sutton. The borough of Lewisham used to be served by the Underground on the East London line – now part of