Operations began with a limited preview service between Dalston Junction and New Cross/New Cross Gate, with full operation between Dalston Junction and West Croydon/Crystal Palace on 23 May.
Operasi dimulai dengan layanan pratinjau terbatas antara Dalston Junction dan New Cross/New Cross Gate, dengan operasi penuh antara Dalston Junction dan West Croydon/Crystal Palace pada tanggal 23 Mei.