| / /1834 | London and South Western Railway
Authorised as the London and Southampton Railway, 77 miles in length. |
| / /1838 | London and South Western Railway
Terminus at Nine Elms (Battersea). |
| / /1839 | London and South Western Railway
London and Southampton Railway renamed the London and South Western Railway. |
| / /1840 | London and South Western Railway
Opened from London to Southampton. Stations on this section have included: Victoria, Battersea Park, Clapham Junction, Earlsfield, Wimbledon, Raynes Park, New Malden, Berrylands, Surbiton, Esher, Hersham, Walton-on-Thames, Weybridge, West Weybridge, Byfleet & New Haw, Woking, Brookwood, Farnborough, Fleet, Winchfield, Hook, Basingstoke, Micheldever, Winchester, Shawford, Eastleigh, Southampton Airport, Swaythling, St Denys, Southampton [1st]. |
| 14/02/1848 | ~London and South Western Railway
Addlestone opened. |
| / /1855 | London and South Western Railway
Applies for more time to complete its Basingstoke to Andover line. |
| 31/12/1855 | Railway Clearing House
By this date, Cork and Bandon Railway, Crieff Junction Railway, Dublin and Belfast Junction Railway, Dublin and Drogheda Railway, Forth and Clyde Junction Railway, Furness Railway, Great Southern and Western Railway, Irish South Eastern Railway, Killarney Junction Railway, Leeds, Bradford and Halifax Junction Railway, Leven Railway, London and South Western Railway, London, Tilbury and Southend Railway, Monkland Railways, Monmouthshire Railway and Canal, Newport, Abergavenny and Hereford Railway, Norfolk Railway, North and South Western Junction Railway, Oxford, Worcester and Wolverhampton Railway, Peebles Railway, Perth and Dunkeld Railway, Shrewsbury and Hereford Railway, St Andrews Railway, Ulster and Dundalk Railway, Waterford and Kilkenny Railway and Waterford and Limerick Railway join. |
| 21/07/1856 | Yeovil to Exeter Line (London and South Western Railway)
Act for Yeovil to Exeter Line passed. |
| 19/07/1860 | Yeovil to Exeter Line (London and South Western Railway)
Line opened. |
| 08/05/1863 | Chard Branch (London and South Western Railway)
Line opened. |
| / /1868 | North British Steam Packet Company
PS Waverley [II] sold to the London and South Western Railway for Southampton to Channel Islands. |
| / /1875 | Somerset and Dorset Railway
London and South Western Railway and Midland Railway take control of the line. |
| / /1880 | Isle of Wight Railway
Due to poor connections from ferries at Ryde Pier the line was extended from Ryde Esplanade to Ryde Pier Head jointly by the London and South Western Railway and the London, Brighton and South Coast Railway. This extension was to be used by the Isle of Wight Railway and the Isle of Wight Central Railway. |
| 01/06/1887 | Devon and Somerset Railway
Link to the London and South Western Railway in Barnstaple opened. |
| / /1891 | Didcot, Newbury and Southampton Railway
Junction made with the London and South Western Railway at Shawford south of Winchester. |
| / /1895 | Dugald Drummond
Offered and accepted the appointment of chief mechanical engineer of the London and South Western Railway Co., formerly held for seventeen years by William Adams. |
| 01/01/1917 | Chard Branch LSWR (London and South Western Railway)
Chard Town closed, trains diverted to Chard Central, the joint station. |
| 08/03/1943 | Didcot, Newbury and Southampton Railway
Re-opened after doubling between Didcot and Newbury and lengthening of the loops on the Newbury to Winchester section. A new junction was put in at Worthy for direct access from the London and South Western Railway to the Newbury line, leaving Winchester Chesil on a loop. |
| 03/01/1951 | Chard Branch LSWR (London and South Western Railway)
Line closed during fuel crisis. |
| 07/05/1951 | Chard Branch LSWR (London and South Western Railway)
Line re-opened. |
| 02/05/1966 | Chard Branch LSWR (London and South Western Railway)
Closed. |
| 12/12/1988 | London and South Western Railway
Three trains are involved in crash at Clapham Junction killing 35 and injuring 500 due to a signal failure caused by incorrect wiring. A Poole to London Waterloo and a Basingstoke to Waterloo ran into empty stock. Signalling engineers were found to be working exceptionally long hours in the area. |
| 23/06/2011 | Yeovil to Exeter Line (London and South Western Railway)
Completion of improvements to Honiton station. |
