| 24/11/1845 | ~London and North Western Railway
Adlington opened |
| 01/01/1846 | London and North Western Railway
London and Birmingham Railway, Grand Junction Railway and Manchester and Birmingham Railway merge to form the London and North Western Railway. |
| 26/06/1846 | North Western Railway
Act passed. |
| 31/12/1846 | North Western Railway
First sod cut. |
| /09/1848 | London and North Western Railway
Consideration of abandoning Leamington to Rugby line promoted by the former Rugby and Leamington Railway. |
| 30/07/1849 | North Western Railway
Skipton to Ingleton opened. |
| 14/08/1849 | Mold Railway
Line opened from Saltney Ferry to Mold, worked by the London and North Western Railway. |
| / /1850 | London and North Western Railway
Work resumes on the Rugby to Leamington Spa branch. |
| / /1851 | London and North Western Railway
Rugby to Leamington Spa opened as a single track railway. |
| /06/1852 | North Western Railway
Line worked by Midland Railway. |
| 02/01/1854 | Newport, Abergavenny and Hereford Railway
Opened from Hereford Barton to Coedygric on the Monmouthshire Railway and Canal Company. Worked by the London and North Western Railway. |
| / /1859 | North Western Railway
Line leased by Midland Railway. |
| / /1859 | Northampton and Market Harborough Branch (London and North Western Railway)
Line opened with stations at Lamport, Brixworth, Spratton, Pitsford and Brampton. |
| 10/09/1859 | Lancaster and Carlisle Railway
London and North Western Railway
Lancaster and Carlisle Railway leased by the London and North Western Railway. |
| 01/06/1860 | Ingleton Branch (London and North Western Railway)
Ingleton to Low Gill opened. |
| 01/08/1860 | ~London and North Western Railway
Adderley Park opened |
| 08/11/1861 | Merthyr, Tredegar and Abergavenny Railway
Agreement reached for lease for 1000 years by the London and North Western Railway. |
| 01/07/1862 | Shrewsbury and Hereford Railway
Leased jointly by the London and North Western Railway, West Midland Railway and Great Western Railway. |
| 07/08/1862 | Merthyr, Tredegar and Abergavenny Railway
Lease agreement with London and North Western Railway confirmed by Act. |
| 01/10/1862 | Merthyr, Tredegar and Abergavenny Railway, London and North Western Railway
London and North Western Railway takes possession of the Merthyr, Tredegar and Abergavenny Railway. |
| 01/03/1864 | London and North Western Railway, South Wales
Extension from Brynmawr to Nantybwch. |
| 25/07/1864 | Rhymney Railway
Act for Caerphilly to Cardiff Line (Rhymney Railway) and connection to the Caerphilly Branch (Brecon and Merthyr Railway). Traffic agreement made with the London and North Western Railway. Larger company helps finance smaller company's plans. |
| / /1865 | Scottish Central Railway
Caledonian Railway
Scottish Central Railway absorbed by Caledonian Railway. Running powers for the North British Railway, London and North Western Railway, Midland Railway and Glasgow and South Western Railway were preserved. |
| / /1865 | Dumfries, Lochmaben and Lockerbie Railway
Caledonian Railway
Dumfries, Lochmaben and Lockerbie Railway absorbed by Caledonian Railway. The Caledonian Railway grants running powers to the London and North Western Railway between Carlisle Citadel, Lockerbie and Dumfries. |
| 29/07/1865 | London and North Western Railway
Land held at Carlisle Crown Street by the Caledonian Railway sold to the LNWR. |
| 30/07/1865 | London and North Western Railway
Makes traffic agreement with the Vale of Neath Railway. |
| 05/10/1865 | London and North Western Railway
Uses running powers over the Taff Vale Extension Railway and an agreement with the Vale of Neath Railway to serve Swansea. |
| / /1866 | Scottish North Eastern Railway
Caledonian Railway
Scottish North Eastern Railway absorbed by Caledonian Railway. Confirmation of running powers for the Highland Railway between Perth General and Stanley Junction. Confirmation of running powers for North British Railway, London and North Western Railway, Midland Railway and Glasgow and South Western Railway. The SNER's running powers over the Montrose and Bervie Railway are transferred to the Caledonian. |
| / /1866 | Merthyr, Tredegar and Abergavenny Railway, London and North Western Railway
Merthyr, Tredegar and Abergavenny Railway bought by the London and North Western Railway. |
| 16/07/1866 | Brynmawr and Blaenavon Railway
Act passed, backed by the London and North Western Railway. |
| / /1867 | London and North Western Railway
Act for north facing junction at Abergavenny for the Merthyr, Tredegar and Abergavenny Railway. |
| 31/01/1867 | Caledonian Railway
London and North Western Railway
Caledonian Railway given running powers over the London and North Western Railway from Carlisle Citadel to Preston. |
| 01/09/1867 | Beaufort Ironworks Tramway, London and North Western Railway South Wales
Link between lines opened. |
| / /1868 | Settle and Carlisle Line (Midland Railway)
An agreement with the London and North Western Railway is reached over use of the Ingleton Branch (London and North Western Railway) and Lancaster and Carlisle Railway by the Midland Railway. The route would involve the North Western Railway. The Midland Railway tries to abandon the Settle and Carlisle Line (Midland Railway). The North British Railway and the Lancashire and Yorkshire Railway block the abandonment. |
| / /1869 | Brynmawr and Blaenavon Railway
Incorporated into the London and North Western Railway. |
| / /1871 | Newport, Abergavenny and Hereford Railway
Abergavenny Junction station re-built at London and North Western Railway expense. |
| 05/09/1871 | Rhymney and Nantybwch Joint Line (London and North Western Railway, South Wales and Rhymney Railway)
Joint line from Rhymney to Nantybwch opened. |
| 02/10/1871 | Rhymney and Nantybwch Joint Line (London and North Western Railway, South Wales and Rhymney Railway)
Joint line from Rhymney to Nantybwch opened to public traffic. The London and North Western Railway diverts all of its Cardiff bound traffic to the Rhymney Railway route. |
| 01/01/1873 | London and North Western Railway South Wales
Line extended to Dowlais Top and Ivor Junction with the Brecon and Merthyr Railway and access to Dowlais Lloyd Street and the Dowlais Iron Company. |
| /11/1873 | London and North Western Railway South Wales
Bill for line to Merthyr and the Brecon and Merthyr Railway, Vale of Neath Railway and Geothin Railway. |
| 18/05/1874 | London and North Western Railway South Wales, Brecon and Merthyr Railway
London and North Western Railway agrees to withdraw Merthyr bill in exchange for joint ownership of the Brecon and Merthyr Railway branch from Dowlais to Merthyr. A link was to be opened from Penywern Junction, by Ivor Junction, and run from there to Morlais on the Brecon and Merthyr Railway. |
| 14/06/1874 | London and North Western Railway South Wales
Morlais Tunnel completed. |
| 16/07/1874 | London and North Western Railway South Wales
Act for extension from Penywern Junction to Morlais. |
| 01/01/1875 | Pontypool, Caerleon and Newport Railway
London and North Western Railway uses line for Shrewsbury to Newport Mill Street. |
| /07/1875 | Sirhowy Tramroad, London and North Western Railway
The London and North Western Railway starts to run trains on the Sirhowy Tramroad. |
| 21/08/1875 | Sirhowy Tramroad, London and North Western Railway
Date of retrospective working agreement. |
| 01/10/1875 | London and North Western Railway
Opens depot at Tyndall Street Goods, Cardiff, approached by 1/2 a mile of traffic from the Rhymney Railway. |
| 13/07/1876 | Sirhowy Tramroad, London and North Western Railway
Act merging the Sirhowy Tramroad into the London and North Western Railway. |
| / /1877 | Llanmorlais Branch (London and North Western Railway)
Penclawdo to Llanmorlais opened. |
| 08/07/1877 | London and North Western Railway
The London and North Western Railway's new diverted approach to Carlisle Citadel is opened. Railway No 1. |
| 08/07/1877 | Lancaster and Carlisle Railway
London and North Western Railway
The London and North Western Railway opens a new southern approach to Carlisle Citadel, London and North Western Railway No 1 Approach Line. |
| / /1878 | Lancaster and Carlisle Railway
London and North Western Railway
Lancaster and Carlisle Railway vested into the London and North Western Railway. |
| 01/05/1878 | Brynmawr and Blaenavon Railway
Extension to Abersychan and Talywain opened to passengers. Track in the station was jointly owned by the London and North Western Railway and the Great Western Railway as the line met its Talwain Branch here. |
| / /1879 | Lancaster and Carlisle Railway
London and North Western Railway
Lancaster and Carlisle Railway fully amalgamated with the London and North Western Railway. |
| /03/1879 | Pontypool Caerleon and Newport Railway
London and North Western Railway stop using line for passengers. Cwmbran to Mill Street becomes freight only. |
| 09/06/1879 | Dowlais and Merthyr Joint Line
London and North Western Railway passenger service starts to run to Merthyr. Access also opened to the Crawshays Private Railway. |
| / /1881 | London and North Western Railway
Rent the Nantyglo to Brynmawr railway from the Nantyglo and Blaina Iron Company. |
| 14/02/1881 | London and North Western Railway South Wales
Cwmbargoed Junction to Cwmbargoed (LNWR) opened. |
| / /1882 | Glasgow and North Western Railway
Route surveyed. |
| /11/1882 | Glasgow and North Western Railway
Glasgow and North Western Railway proposed, the Bill presented to Parliament to seek approval.. The route was to have been a 167 mile long railway from Glasgow to Inverness via Fort William. Supported by the North British Railway and opposed by the Highland Railway, Caledonian Railway (part owners of the Callander and Oban Railway), Caledonian Canal, David MacBrayne and some landowners. The Bill was rejected in 1883. It was not built (a less ambitious variation of it, the West Highland Railway with an Act in 1889, did open). |
| / /1884 | Newport, Abergavenny and Hereford Railway
Private coal and stores siding laid to Abergavenny Lunatic Asylum from south junction at triangle. London and North Western Railway had running powers to hospital. |
| 01/07/1884 | Bethesda Branch (London and North Western Railway)
Line opened from Penrhyn, by Bangor, to Bethesda. |
| 28/07/1884 | Inverness and Aviemore Direct Railway (Highland Railway)
Act passed. This was partly in response to the proposed incursion of the North British Railway's Glasgow and North Western Railway from Glasgow to Inverness via Loch Lomond, Crianlarich, Glencoe, Fort William and the Great Glen. |
| / /1885 | Portpatrick Railway
Wigtownshire Railway
The Caledonian Railway's lease expires - the Portpatrick Railway and Wigtownshire Railway become jointly run as the Portpatrick and Wigtownshire Joint Railway - controlled by the Caledonian Railway, London and North Western Railway, Glasgow and South Western Railway and Midland Railway. The stock was owned by all four companies and operated by the two Scottish companies. The Joint company also owned 4/5 of the Larne and Stranraer Steamship Joint Committee, the remaining 1/5 owned by the Belfast and Northern Counties Railway. |
| 04/05/1885 | London and North Western Railway South Wales
Dowlais High Street opened, through trains to Merthyr stop using Dowlais Lloyd Street, and Dowlais Top closed. |
| /07/1893 | London and North Western Railway
Caledonian Railway
Corridor dining cars begin to be used on the West Coast Main Line. |
| / /1895 | Weedon, Daventry and Leamington Spa Branch (London and North Western Railway)
Line opened. |
| / /1900 | Penllwyn Tramway, London and North Western Railway
A new spur, west of Nine Mile Point, is opened to the Penllwyn Tramway by the owners, the London and North Western Railway to give access to Nine Mile Point Colliery. Formerly this tramway was accessible by a point west of Nine Mile Point and thus in Great Western Railway territory. |
| 31/07/1902 | Brynmawr and Western Valleys Railway
Line taken over jointly by the London and North Western Railway and the Great Western Railway as the Nantyglo and Blaina Iron Company were asking too high a price to buy their private Nantyglo Iron Works to Brynmawr railway. |
| / /1910 | London and North Western Railway, South Wales
Run-away coal train piles up after being diverted onto a dead-end siding by signalman on Ebbw Vale Branch. |
| / /1918 | London and North Western Railway
Lease of the Nantyglo to Brynmawr railway expires. |
| / /1923 | London Midland and Scottish Railway
0-8-4 tanks by H.P.M. Beams introduced on the London and North Western Railway, South Wales. |
| / /1937 | London and North Western Railway South Wales
Cwmbargoed branch closed. |
| / /1948 | ~London and North Western Railway
Adlington renamed Adlington (Cheshire) |
| 05/02/1951 | Beaufort Ironworks Tramway, London and North Western Railway, South Wales
Link closed to passengers. |
| 23/09/1953 | Rhymney Railway, London and North Western Railway, South Wales
Joint line from Rhymney to Rhymney Bridge closed. |
| 22/11/1954 | London and North Western Railway South Wales
Freight services transferred to Great Western Railway routes. |
| / /1958 | Weedon, Daventry and Leamington Spa Branch (London and North Western Railway)
Closed to passengers. |
| 06/01/1958 | London and North Western Railway South Wales
Closed to passengers. |
| / /1959 | London and North Western Railway
Rugby to Leamington Spa closed to passengers. |
| 02/11/1959 | Beaufort Ironworks Tramway, London and North Western Railway, South Wales
Link closed completely. |
| 04/01/1960 | Northampton and Market Harborough Branch (London and North Western Railway)
Line closed to passengers. |
| / /1963 | Weedon, Daventry and Leamington Spa Branch (London and North Western Railway)
Closed to goods except the Marton to Southam section which was accessed by the Rugby to Marton line. |
| 07/10/1963 | Bethesda Branch (London and North Western Railway)
Line closed. |
| 06/01/1969 | Northampton and Market Harborough Branch (London and North Western Railway)
Line re-opened for through passenger trains. |
| 01/05/1969 | Northampton and Market Harborough Branch (London and North Western Railway)
Line closed to passengers. |
| 10/07/1972 | Northampton and Market Harborough Branch (London and North Western Railway)
Line re-opened for through passenger trains. |
| 16/08/1981 | Northampton and Market Harborough Branch (London and North Western Railway)
Line closed to passengers. |
