The line opened on 6 July 1840, and the company changed its name to the "London and Blackwall Railway" on completion of an extension to Fenchurch Street, just within the City boundary, in 1841. A line from Stepney (now Limehouse) linking it with the Eastern Counties Railway at Bow was opened in 1849, known as the London and Blackwall Extension Railway (LBER), at which time the line was converted to steam locomotive operation and the track converted to . Agreement between the L&BR and the ECR about operation of the services over the LBER could not be reached so the actual junction was not completed. An interchange station called Victoria Park and Bow was opened but the ECR stopped few services there so most services terminated at Bromley and Bow. Services were withdrawn from Victoria Park and Bow on 6 January 1851.