In April 2015, Transport for London placed a notice in the Official Journal of the European Union, inviting expressions of interest in operating the next concession.

[2] In July 2015, Transport for London announced the shortlisted bidders for the next concession were Arriva UK Trains, ComfortDelGro, Govia and MTR Corporation.

[4][5][6] Arriva held a 50% shareholding in the previous concession holder, London Overground Rail Operations.

[7] As of December 2024[update], the typical off-peak service pattern is:[8] Battersea Park railway station is served by an infrequent parliamentary train service from Dalston Junction, which terminates at Battersea Park instead of Clapham Junction.

The first units on the Lea Valley lines entered service on 3 March 2020 after a first attempt on 24 February 2020.