Staples Corner is a major road junction in London, United Kingdom. It is about north-west from Charing Cross and directly to the west of the Brent Cross crossover. It has two linked roundabouts and flyovers, which connect the A406 North Circular Road with the A5 Edgware Road and the start of the M1 motorway. Also running through Staples Corner, between the two roundabouts, is the Midland Main Line and Thameslink railway line. Construction The Staples Corner junction was built in accordance with plans from the 1960s to continue the M1 further south to West Hampstead. These proposals, part of the London Ringways Plan, would have seen a three level junction with the M1 as the middle level crossing above the roundabout on a flyover and passing under the A406 flyover. South of the junction the motorway would have headed through Cricklewood on an elevated roadway to meet the North Cross Route section of the London Motorway Box (Ringway 1) at an elevated Y-shaped junction. Most of the Ringways Plan including the North Cross Route was cancelled in 1973. The A406 flyover opened on 18 August 1976. Staples Corner is named after the Staples Mattress factory, which was at the road junction from 1926 to 1986. Harold Heal commissioned the designing and building of the factory. Incidents On 28 October 1988, two southbound Class 31 locomotives ran away and crashed down the bridge onto the North Circular Road. The locomotives were unmanned and no one was hurt. On 11 April 1992, a Provisional IRA 100 lb van bomb devastated Staples Corner, causing serious damage to roads and nearby buildings and the closure of the junction (see 1992 Staples Corner bombing). Another bomb exploded near the junction on 8 October 1993, causing damage but no injuries. The B&Q DIY store damaged by the bomb (on the site of the original mattress factory) was demolished, and replaced by a branch of Staples office supplies. Staples stayed at the site until 2017, when the retailer closed all its UK physical stores. There is a large retail park at Staples Corner, located between the A5 and the railway line. Close by is the Brent Cross Shopping Centre, named after the A406 and A41 road junction. The format of the Staples Corner junction was modified during the reconstruction works necessitated by the bombings. An additional sliproad onto the M1 from the east was added to remove