The requirements are the London to Brighton (essential), South London Network (essential), Uk pro LED signals (essential), WCML Trent valley (essential), AP 319 (essential), MML London to Bedford (essential), VP grass and tree pack (essential), (4AS) Fen Line (essential), British Rail Class 370 (essential), Portsmouth Direct Line to Waterloo (essential), A4 locos(essential), AP wherry Lines (essential), AP 205 (essential), A3 Flying Scotsman both packs (essential), British Rail Class 442 (essential).
Quick History
The London and Brighton Railway was first surveyed via Redhill and Haywards Heath in 1829, upon commission by The Surrey, Sussex, Hants, Wilts & Somerset Railway. The scheme was not started until 1837 following a Parliamentary Act authorising capital of £2.4 million toward construction. The line was to emerge from the London and Croydon Railway (L&CR) at Norwood, utilising the existing lines from London Bridge. The Act also insisted that the line between Norwood Junction and Redhill should share it’s running with the Southern Railway (SER – later the South Eastern & Chatham Railway – or SE&CR) main line to Dover, resulting in sixty years of disputes between the two companies.
The difficult terrain of the North Downs, Wealden Ridge and South Downs required substantial earthworks, including Britain’s largest cutting at Merstham, five tunnels, several embankments and the 96 foot (29.3m) high, 1,475 foot (450m) long Ouse Valley Viaduct near Balcombe.
Opened in two stages, the first section opened on 12 July 1841, serving Norwood Junction to Haywards Heath. The final section from Haywards Heath into Brighton opened on 21 September 1841.
Following an Act of Parliament during July 1846, the London, Brighton and South Coast Railway (LB&SCR) was formed. A further amalgamation during the late 1850’s formed the Victoria Station & Pimlico Railway Company, which included the construction of a new bridge over the River Thames at Battersea, and an important new terminus in the west end of London at Victoria. The jointly financed project related to the West London Extension Joint Railway, allowing freight transfers between the funding companies as well as some cross-London passenger services. The line was opened in 1863, with LB&SCR operated passenger trains between Clapham Junction and Kensington.
Following the acquisition of the West End of London and Crystal Palace Railway, a new ‘cut-off’ main line between Windmill Bridge Junction (Norwood) and Balham was constructed between 1861 and 1862 shortening the route from East Croydon to Victoria. At the same time, the LB&SCR was co-operating with the LC&DR to create the South London Line between London Bridge and Victoria.
To alleviate the frequent disputes with the SER from the sharing of the busy section between Croydon and Redhill, the LB&SCR built an avoiding line between Coulsdon North and Earlswood. Opened on 8 November 1899 (1 April 1900 for passenger traffic) and owned by the LB&SCR the section became known as the Quarry Line.
This Route is set after network rail finished off the switch over from 750v dc third rail to 25kv ac OLE. This was started by NSE and intercity to speed services up to Gatwick Airport to London Victoria. As part of the switch over the four tacks were added between Three Bridges to Brighton.

Quick Facts
Location: Southern England, UK
Length: 50 miles (80.5 km)
Electrification: 25KV AC OLE
Track Gauge: Standard (1,435mm)
Owner: Network Rail
Max Line Speed: 125M.P.H on the fast and 110M.P.H on the slow.
Operator: Southern Train (Operator of last resort) , Great Western Railway (concession), London Overground (concession), South Western Railway (concession), Thameslink (concession), Gatwick Express (concession) and freight trains (Open access operator).
Focus Period: Present Day Fic
Common Rolling Stock: Class 377, Class 378, Class 350, Class 769(Class 319 will be ok because a 769 is a 319 with diesel engines), Class 800, Class 444 and Class 450 EMUs
Versions
This is Version 1. It has the line between Gatwick and London Victoria switch to OLE plus the line to West Croydon and Some other parts. Please only make scenarios where there is a Quick Drive.

Know Issues
OLE clipping bridges, Tunnels, Signals and Signal Gantries.
Disclaimer
That this has been tested on my system, but it may not work or break something. If it, does I am not responsible of the damages. I will try to help but nothing more than trying to help you. Please do not copy this without my permission for Public Use. If you do, I will not make an more updates to this route for a minimum of six months or longer. I will try to have the Copy removed. You can a Make a Copy as long as it is only for YOU. You can make scenarios for this route as long as you follow these rules, You must make it be free, You must credit Me, You Must Link to this Route, You Must put the All of the requirements next to the scenarios on the page for the download of the scenario(s). All copy right is of their respect owners. An things Like assets I make will under copy right of me. If not already Copyrighted by Someone else.

The Manual and assets files are for the future when a make a reskin of the 350 into southern and add a manual about the key upgrades I have done.