Originally called the Commercial Railway, the London and Blackwall Railway (L&BR) in east London, England, ran from Minories to Blackwall via Stepney, with a branch line to the Isle of Dogs, connecting central London to many of London's docks. It was operational from 1840 until 1926 and 1968, closing after the decline of inner London's docks. Much of its infrastructure was reused as part of the Docklands Light Railway. The L&BR was leased by the Great Eastern Railway in 1866, but remained independent until absorbed into the London and North Eastern Railway at the 1923 Grouping. Another branch was opened in 1871, the Millwall Extension Railway.
Original bridge at Limehouse on the London and Blackwall Railway. It now carries a branch of the DLR. The iron fencing being partially open was a feature of the line which was popular with passengers, as it gave a quieter ride than the reverberating brick walling of the nearby London and Greenwich Railway. This section of line was one of those to carry an iron roof when steam locomotives were first introduced.