S&SJR. The line was jointly owned and operated until , when it split into three: to Crowhurst South junction, allowing connection to the SER's Redhill–Tonbridge line to , owned by the LB&SCR but jointly operated with the SER to , owned by the LB&SCR with junctions with the Wealden Line, the Three Bridges to Tunbridge Wells Central Line, and the Cuckoo Line Part-electrification The Southern Railway electrified the Woodside and South Croydon Joint Railway in 1935 but the line closed in 1983. Some of the redundant materials were used to electrify the short section between South Croydon and Selsdon railway station in 1984 and a few electric trains then operated from London to Sanderstead via East Croydon. The section beyond Sanderstead to East Grinstead was electrified in 1987 at 750 V DC third rail. However, the Uckfield branch is not electrified, and is worked by Class 171 diesel multiple units, which replaced Class 205 and Class 207 DEMUs. Services Typical off-peak services on the Oxted Line are: 2 tph from London Victoria to East Grinstead calling at Clapham Junction, East Croydon, Sanderstead, Riddlesdown, Upper Warlingham, Woldingham, Oxted, Hurst Green, Lingfield and Dormans 1 tph from London Bridge to Uckfield calling at East Croydon, Oxted, Hurst Green, Edenbridge Town, Hever, Cowden, Ashurst, Eridge, Crowborough and Buxted. In peak hours, this service increases to 2 tph. In peak hours, 2 tph between Bedford/Luton and East Grinstead. This service calls at all stations between South Croydon and East Grinstead, except in the mornings southbound, and evenings northbound, it skips stations between Sanderstead and Oxted exclusive. On Sundays, the London Bridge to Uckfield service runs only between Oxted and Uckfield. Oyster and contactless payment cards are valid on the Oxted route as far as Upper Warlingham. Connections with heritage railways The two branches of the line connect with different heritage railways directly: the Spa Valley Railway runs from to , where it has restored the disused down island platform and commenced services on 25 March 2011. the Bluebell Railway runs from to , where it has built a new single-platform station which interchanges with the National Rail station. Through running to Network Rail started in March 2010, when GB Railfreight was contracted to run occasional trains carrying 1,000 tons of excavated material from the Bluebell's northern extension to a disposal site at Calvert, Buckinghamshire. Passenger services started on 23 March 2013. Former connections and