| County of Bedfordshire, | | |
| Borough of Bedford, Bedford | 2 to 5 | Platform extension, working site and temporary access. |
| District of Mid Bedfordshire, | | |
| Town and Parish of Sandy, | | |
| Sandy | 2, 4 to 10 | Platform extension, working site and temporary access. |
| Town and Parish of Biggleswade, | | |
| Biggleswade | 5 to 15, 17, 18, 21 and 23 | Platform extension, working site and temporary access. |
| Town and Parish of Arlesey, | | |
| Arlesey | 3 to 6 and 11 | Platform extension, working site and temporary access. |
| Town and Parish of Flitwick, | | |
| Flitwick | 1 to 6 | Platform extension, working site and temporary access. |
| Parish of Harlington, | | |
| Harlington | 1 to 8 | Platform extension, working site and temporary access. |
| County of Cambridgeshire, | | |
| City and District of Cambridge, | 1 to 7 | Platform extension, working site and temporary access. |
| Cambridge | | |
| District of South Cambridgeshire, Parish of Foxton, | | |
| Foxton | 1 to 3 and 5 to 10 | Platform extension, working site and temporary access. |
| Parish of Meldreth, | | |
| Meldreth | 1 to 11 | Platform extension, working site and temporary access. |
| Parish of Shepreth, | | |
| Shepreth | 1 to 5 and 8 to 11 | Platform extension, working site and temporary access. |
| County of Hertfordshire, Borough of Hertsmere, Town and Parish of Elstree and Borehamwood, | | |
| Elstree and Borehamwood | 2 to 8 | Platform extension, working site and temporary access. |
| City and District of St. Albans, | | |
| St. Albans | 1 and 5 to 23 | Platform extension, working site and temporary access. |
| Parish of Harpenden, | | |
| Harpenden | 1 and 3 to 18 | Platform extension, working site and temporary access. |
| Greater London, London borough of Barnet, | | |
| Mill Hill Broadway | 1 to 4 and 6 to 8 | Platform extension, working site and temporary access. |
| Hendon | 12 to 14 | Platform extension, working site and temporary access. |
| London borough of Haringey, | | |
| Finsbury Park | 5, 6 and 8 to 12 | Platform extension, working site and temporary access. |
| London borough of Islington, | | |
| Finsbury Park | 2, 4 to 14, 19, 21 to 28 and 30 to 36 | Platform extension, working site and temporary access. |
| London borough of Camden, | | |
| West Hampstead Thameslink | 1 to 16 | Platform extension, working site and temporary access. |
| London borough of Southwark, | | |
| Elephant & Castle | 107 to 118 | Platform extension, working site and temporary access. |
| London borough of Lewisham, | | |
| New Cross | 114 to 116, 118 and 120 to 131 | Platform extension, working site and temporary access. |
| Hither Green | 149 to 155 | Platform extension, working site and temporary access. |
| London Borough of Croydon, Sanderstead | 27 to 29 and 31 to 33 | Platform extension, working site and temporary access. |
| East Croydon | 5, 6, 8 to 13 | Platform extension, working site and temporary access. |
| West Croydon | 14 to 20 | Platform extension, working site and temporary access. |
| London Borough of Greenwich, | | |
| Eltham | 1 to 11, 14 and 15 | Platform extension, working site and temporary access. |
| Mottingham | 17 to 21 | Platform extension, working site and temporary access. |
| County of Kent, Borough of Dartford, | | |
| Dartford | 2 to 12, 16 to 18, 20, 22, 29 and 30 | Platform extension, working site and temporary access. |
| Borough of Ashford, Parish of Pluckley, | | |
| Pluckley | 1 to 8 | Platform extension, working site and temporary access. |
| Borough of Tonbridge & Malling, | | |
| Tonbridge | 1 to 4 | Platform extension, working site and temporary access. |
| Borough of Tunbridge Wells, Parish of Paddock Wood, | | |
| Paddock Wood | 1 to 6 | Platform extension, working site and temporary access. |
| County of Surrey, Borough of Reigate & Banstead, | | |
| Earlswood | 14 to 16 and 18 to 22 | Platform extension, working site and temporary access. |
| Parish of Salfords and Sidlow, | | |
| Salfords | 8 to 10 and 12 to 15 | Platform extension, working site and temporary access. |
| District of Tandridge, Parish of Oxted, | | |
| Oxted | 1 and 3 to 12 | Platform extension, working site and temporary access. |
| Borough of Guildford, | | |
| Guildford | 1 to 5 | Platform extension, working site and temporary access. |
| Parish of Effingham, | | |
| Effingham Junction | 1 to 6 and 8 to 10 | Platform extension, working site and temporary access. |
| District of Mole Valley, | | |
| Bookham | 1 to 5 | Platform extension, working site and temporary access. |
| County of West Sussex, District of Arun, | | |
| Angmering | 2 to 9 | Platform extension, working site and temporary access. |
| Borough of Crawley, | | |
| Three Bridges | 12 to 34 | Platform extension, working site and temporary access. |
| District of Mid Sussex, Parish of Balcombe, | | |
| Balcombe | 20, 21 and 30 to 38 | Platform extension, working site and temporary access. |
| District of Adur, Parish of Lancing, | | |
| Lancing | 4 to 6 and 11 | Platform extension, working site and temporary access. |
| Borough of Worthing, | | |
| Durrington-on-Sea | 10 to 14 | Platform extension, working site and temporary access. |
| Goring-by-Sea | 16 to 31 | Platform extension, working site and temporary access. |
| District of Arun, Town and Parish of Littlehampton, | | |
| Littlehampton | 1 to 5 | Platform extension, working site and temporary access. |
| County of East Sussex, Borough of Eastbourne, | | |
| Eastbourne | 11, 13 to 18 | Platform extension, working site and temporary access. |
| Hampden Park | 2 to 10 | Platform extension, working site and temporary access. |
| District of Lewes, Parish of Hamsey, | | |
| Cooksbridge | 1 to 9 | Platform extension, working site and temporary access. |
| Parish of Beddingham with Glynde, | | |
| Glynde | 2 to 13 | Platform extension, working site and temporary access. |
| Parish of Plumpton, | | |
| Plumpton | 1 to 6, and 9 to 11 | Platform extension, working site and temporary access. |
| District of Wealden, Parish of Berwick, | | |
| Berwick | 9 to 16 | Platform extension, working site and temporary access. |
| City of Brighton & Hove, | | |
| Brighton | 13 | Platform extension, working site and temporary access. |
| Portslade | 21 to 23, 25, 26, 28 to 33 and 35 | Platform extension, working site and temporary access. |
| Borough of Luton, | | |
| Leagrave | 2 to 5 and 7 to 11 | Platform extension, working site and temporary access. |
| Luton | 12 to 36 and 38 | Platform extension, working site and temporary access. |
| Luton Airport Parkway | 40 and 44 | Platform extension, working site and temporary access. |