From the Wikipedia page .
Addiscombe Railway Park, also known as the Addiscombe Linear Park, is managed by the London Borough of Croydon. It is on former railway line between East India Way (off the Lower Addiscombe Road) and Blackhorse Lane tram stop. The site of Addiscombe Station was used for housing.
The only bus service which serves it directly is London Buses route 197. The nearest tram stop is Addiscombe.
The first section of the park was opened on 26 May 2007. The second section was opened on 15 March 2010.
Some information on the Croydon website .