The 1930s saw a continuation of the Southern Railway's
suburban electrification programme, during this decade they would complete
the electrification of all lines to destinations within an hour of London
and also to many outer suburban areas within 90 minutes of the capital. This
was also the decade that the SR would begin the electrification of the main
lines to the south coast, but that is another story and it is with the suburbs
and just beyond that this story concentrates.
Eastern Section Extension
Dartford - Gravesend Central went live on 6th of July
1930, thus completing the first phase of electrification on the former SECR
lines. There followed during 1933 and 34 a 'filling in the blanks' style
of electrifying a few spur lines that linked but had been omitted from the
earlier programme. In January 1935 the next noticeable extension was switched
on being the two routes to Sevenoaks; one from Orpington, the other from
Bickley via Otford. The short section from Nunhead to Lewisham was electrified
from September 30th 1935 and thus enabled the operation of peak hours workings
between Dartford and Victoria and Holborn Viaduct.
The last parts of the Eastern extensions were completed
just before the outbreak of World War II being opened to electric traction
on the 2nd of July 1939, they being the lines from Shoreham to Maidstone
East, Swanley to Gillingham and Gravesend to both Maidstone West and
Rochester.
Central Section Extension
1930 saw the completion of the newly constructed line
between Wimbledon and Sutton via St. Helier, six months later on the 6th
July 1930 the Wimbledon to West Croydon line also saw its first electric
trains. The next work on the central section that wasn't connected with the
Brighton line electrification was the switching on of the route between Woodside
and Sanderstead on the 30th September 1935. This effectively completed the
suburban lines of the Central section and within three years most of the
sections main lines would also be electrified.
Western Section Extension
The royal town of Windsor saw it's first electric trains
on the 6th July 1930 when the routes to there from Twickenham and Houslow
via Staines was switched on. It was a further six and a half years before
any further third rail was energised on the section which came about on the
3rd of January 1937 When the lines between Surbiton and Guildford via Woking
along with the branch from Weybridge to Staines via Chertsey were electrified.
The line from Woking to Winchester was electrified as far as Alton on the
4th July 1937 and this was as far as the third rail ever got on this section
of line. The former LSWR line from Virginia Water to Wokingham and the former
SECR section from Wokingham to Reading along with the branches from Ascot
to Aldershot and Guildford to Aldershot joined the electrified network on
New Years Day 1939.
A new suburban branch from Motspur Park (on the Waterloo
- Epsom line) to Leatherhead via Chessington was given approval for construction
during the mid 1930s. It was to be electrified from the outset and construction
started well with the section from Motspur Park Junction to Tolworth opening
on March 29th 1938 and the line extending to Chessington South from the 28th
of May 1939. The outbreak of the second world war later in 1939 caused the
temporary abandonment of the work. But this proved to be the last electrification
by the Southern Railway as the project was never resumed after the end of
the war by either the Southern Railway or their successors and the uncompleted
works for the line beyond Chessington were permanently abandoned .
Continue To Part Four - Southern Railway Suburban EMUs