Option 1 proposes that 8 of the 12 Elizabeth line trains per hour that will terminate at Abbey Wood are extended eastwards, sharing the existing North Kent line tracks with Southeastern and Thameslink services.
Of the 8 trains per hour, 4 would terminate at Northfleet, with the remaining 4 continuing on to Gravesend.
The Elizabeth line trains would stop at all the stations on the North Kent line between Abbey Wood and Gravesend.
This option would require some changes to the existing Southeastern service to reduce operational conflicts with the additional Elizabeth line services running on the North Kent line tracks.
The 2 trains per hour “circular” services, currently operating between the Crayford and Barnehurst lines and the Abbey Wood line, would instead be diverted to terminate at Dartford. The diversion of these services will require passengers wishing to travel between Crayford / Barnehurst and Abbey Wood to use rail services via Dartford or to use bus services.
This option would require the construction of some sections of additional track and junction works within the existing rail Corridor, significant works at Abbey Wood, Slade Green and Dartford stations and require additional land to accommodate additional train stabling facilities.