[1] The station is situated on the Midland Main Line and managed by Thameslink.

The typical off-peak service in trains per hour is:[11] During the peak hours, the station is served by additional services to and from Rainham, Sutton and East Grinstead.

[12] In January 2009, the previous franchisee First Capital Connect proposed that the ticket office at Harlington railway station would open for just four hours per day.

The single automated ticket machine, which was stolen in summer 2008,[15] was replaced the same week that the proposals were announced.

Subsequently, whilst a reduction in hours was agreed, although not to the degree set out in the initial proposal (see above).