|/ /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|
|/ /1855||London and South Western Railway|
Applies for more time to complete its Basingstoke to Andover line.
|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)|
|08/05/1863||Chard Branch (London and South Western Railway)|
|/ /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.
|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)|
|02/05/1966||Chard Branch LSWR (London and South Western Railway)|
|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. Signaling engineers were found to be working exceptionally long hours in the area.