"Caledonian Road & Barnsbury railway station in the London Borough of Islington in North London is on the North London Line and is in Travelcard Zone 2. The station and all trains serving it are operated by London Overground. The station opened in 1870 as "Barnsbury" replacing the 1852 Caledonian Road station which was slightly west of the present site. Barnsbury was renamed "Caledonian Road & Barnsbury" in 1893.
The station entrance on Offord Street leads to the old westbound platform (until February 2010) from which a footbridge gives access to the brand new island platforms, curiously numbered 2 and 3, probably to distinguish from the old platform 1. There is a footpath, with Oyster readers, from Caledonian Road to the entrance.
London Buses routes 17, 91, 153, 259, 274 and night route N91 serve the station."