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SimSig North London Line
Sim Versions
Auto Working
The Services
Train Classes
Hints and Tips
Known Issues
Hot Keys
Signalbox Prefix Codes
Reference Section
Scrolly Beta

SimSig North London Line


Sim Versions

Version Status Scroll/Views Published Comments
v2.131 Donationware S 09/07/12 Beta version no longer available for Download
v2.102 Donationware V 06/11/05 No longer available to download]]


Title Published Author Comments
NLL 26-09-07 07/03/08 TBC Bundled with v2.131
Winter 2003 06/11/05 TBC Bundled with v2.102
North London Line Winter 2003 (Revised) 04/12/09 Noisynoel Available from Download section
NLL Winter 2003 v1.1 for beta scrolly 30/04/12 AndyG Available from Download section
NLL Winter 2003 v1.2A for beta scrolly 01/10/12 Adrian the Rock Available from Download section
North London 1985 v4.1 TBC KurtDS Available from Download section
North London Line 1991 TBC Billgensheet Available from Download section
North London Line February 2004 TBC Budgie Available from Download section
North London Line multiplay WTT TBC Gonzo Available from Download section
North London Line Summer 2004 & Willesden Derailment TBC Budgie Available from Download section


Welcome to SimSig’s 9th offering, that of the North London Line. This area covers numerous signalboxes from Richmond right round to North Woolwich and Barking. It also covers the Temple Mills area, some of which is under reconstruction for the Channel Tunnel works. This simulation is based on pre-Channel Tunnel works, pre-East London Line reopening, and pre-North London Line recontrol/resignalling, and is a hybrid of the route from the 1980s to the early 2000s.

Some of the information here relates to the new version under test, release date TBA.


A two-letter code in between the tracks indicates how that track is electrified. A key is on the far left of the map to remind you what the codes mean. The only real place where this is important is between Camden Road and Dalston Junction. The passenger lines (lower on the screen) are electrified by 3rd rail only, and freight trains designated “E” cannot run this way. The freight lines (upper) are electrified by overhead only. Trains designated “D” may run on either line.

Auto Working

To assist in playing the simulation, there are three automatic options:

Automatic Code Insertion – for simple next train workings, this will interpose the next train in the outgoing train describer berth. This covers Richmond, Willesden High Level, Kensal Green Reversing Siding, Gospel Oak, Camden Road, Camden Road West (reverse), Hackney Wick, Stratford Low Level, Stratford East (reverse), North Woolwich, Upper Holloway, and Barking. At other locations, and where trains divide or join, you will need to interpose these yourself.

Custom House – North Woolwich Auto – sets routes onto the One Train Working (OTW) section, and back out again.

Richmond – Gunnersbury Auto Working – sets routes over Gunnersbury Junction and into and out of Richmond station. This does not cover Acton Central. Note that no regulation is performed, it is simply a first-come-first-served situation.

The Services

Four Silverlink Metro services run each way on the NLL from Stratford Low Level to Richmond and vice versa. Two of these are extended to North Woolwich. A couple of extra services on the “core” Stratford to Camden Road section also run during the day. Each train consists of a 3-car class 313 EMU which is capable of running on 3rd rail or 25kv overhead.

Three diesel multiple units form a half-hourly service between Gospel Oak and Barking.

About every 10 minutes, an LUL service comes in from Turnham Green to Richmond, returning a few minutes later.

Half hourly EMU service between Clapham Junction and Willesden Junction High Level.

The North London Line is used heavily by freight trains going around London. Many of these run “as required” or run different routes depending on requirements.

Train Classes

Note that these are generalised and variations may occur. Always check the timetable!

2N%%%% North Woolwich <> Richmond class 313 EMUs

2J%%%% Gospel Oak <> Barking DMUs

2Y%%%% Clapham Junction <> Willesden Junction High Level EMUs

5S%%%% Trains reversing at Stratford

5Y%%%% Trains reversing at Kensal Green Jn

5X%%%% Eurostars for GNER’s White Rose Service to Leeds

*O%%%% Trains running to Southern Region (usually towards Kew East Jn or Mitre Bridge Jn)

*L%%%% Trains running to Anglia Region (usually towards Stratford, Barking, or Temple Mills)

*E%%%% Trains running to Eastern Region (usually towards Finsbury Park or King’s Cross Freight Terminal Jn)

*M%%%% Trains running to London Midland Region (usually towards Camden Jn or Harlesden Jn)

*V%%%% Trains running to Western Region (usually towards Acton East Jn)


The supplied timetable runs from midnight to 1am the following day. Note that you must start the timetable prior to the first passenger services in order to get the full stock complement into the system. The 2N%%%% and 2J%%%% services never leave the area so the stock to form these services must exist else there will be gaps in the service.

Hints and Tips

Don’t set routes for trains without checking their timetable. Many freights run early and will potentially block the system up if you let them run before their time. If they have a path, then run them, but check carefully first. It is very easy to get dogknotted and congested on the NLL!

Late running passenger trains may be terminated early by editing their timetable. Make sure you use the “Set next location” button to tell the train where it is.

Trains may be held upon exiting the area to busy locations. Stratford in particular has main line services that will prevent a freight leaving Channelsea Junction until they have a path for it. Some freights will block Channelsea Junction while they wait. For simulation purposes trains will be let through at the following times:

  • Within a couple of minutes during the night
  • During rush hour – at 00, 15, 30, and 45 past each hour for 3 minutes
  • During daytime – at 00, 10, 20, 30, 40, and 50 past each hour for 3 minutes


At present, NLL can only be chained to King's Cross , at Finsbury Park, Harringay and Freight Terminal Junction. However, when NLL is refreshed, it will be able to chain to London Euston (at Camden Junction), Wembley Suburban (at Willesden Low Level), Marylebone (at Neasden South Jn), Wembley Mainline (at Willesden Jn, Willesden No.7 Jn, Harlesden Jn, Mitre Bridge Jn and Camden Jn), West Hampstead (at Brent Curve Jn, Criklewood Jn and Carlton Road Jn), Feltham (at Richmond, New Kew Jn and Old Kew Jn), and West Anglia (at Reading Lane Jn, Tottenham South Jn, Coppermill Jn and Seven Sisters).


Many thanks to “Gonzo” and “Budgie” for their hard work in testing the simulation and for providing the timetable.

Known Issues

  • Signal 320 (near South Tottenham) has an Auto button, but if pressed it will generate an 'Auto working not available for this route' message, regardless of which route is set from it.
  • If ROV is pressed, and signals in the Richmond-Gunnersbury area are collared, ARS will treat them as if they aren't collared.
  • The default timetable has some bugs. An improved version is available in the Downloads/Uploads section.


To help those unfamiliar with the London area, the areas that can be reached from the fringes are listed here (fringes from left to right accross the screen):

Fringe To
Richmond Connection For ECS shunt moves from the Barnes line to Richmond P3
Old Kew Jn. To Feltham and the south
New Kew Jn. Connection to the south London commuter network
Turnham Green London Underground (LUL) District Line
Acton East Jn. To the Great Western Main Line (GWML), for the South West and South Wales
Willesden Jn. To London Euston
Mitre Bridge Jn. To Clapham Junction and the south east
Willesden Low Level To Watford Junction on the suburban DC lines (chains to Wembley Suburban here)
Harlesden Jn. To the West Coast Main Line (WCML) and the north
Willesden No. 7 Junction To the WCML and the north
Neasden South Jn. For Aylesbury and the Midlands via Banbury
Brent Curve Junction For the Midland Main Line north to Bedford, Nottingham, Derby and Shefield
Cricklewood Curve Jn. To St. Pancras (link to Junction Road Junction)
Camden Junction To the WCML and the north
Freight Terminal Junction To the East Coast Main Line (ECML) and the north
Ashford CTRL A link to the High-Speed line to Ashford and Europe
Silo Curve Junction A link to the St. Pancras international platforms
Finsbury Park To the East Coast Main Line (ECML) and the north
Carlton Road Jn. For the Midland Main Line north to Bedford, Nottingham, Derby and Shefield
Reading Lane Jn. To London Liverpool Street
Harringay To the East Coast Main Line (ECML) and the north
Carpenters Road Jn To Liverpool Street and Fenchurch Street
Stratford To Anglia
Seven Sisters To Cambridge and Hertford East
Tottenham Hale To Cambridge and Hertford East
Barking To Shoeburyness, Southend and Dagenham

Hot Keys

The following hot keys are assigned:

  • 1. Richmond
  • 2. Acton Wells
  • 3. Neasden Jn
  • 4. Gospel Oak / Camden Rd
  • 5. Dalston Jn
  • 6. Channelsea Jns
  • 7. South Tottenham / Temple Mills
  • 8. Fringe area

Signalbox Prefix Codes

ACW Acton Canal Wharf
AF Ashford CTRL*
AW Acton Wells
BL Bollo Lane
CR Camden Road
D Dalston Jn
DH Dudding Hill
F Feltham*
GB Richmond
GO Gospel Oak
HL Willesden High Leve*
HP Harringay Park Junction
K Kings Cross*
KE Kew East
L Liverpool Street#
NJ Neasden Jn
S Stratford#
SN Slough New*
ST South Tottenham
UH Upper Holloway#
UR Upminster
W Wimbledon*
WH West Hampstead*
WK Turnham Green relay room (LUL)*
WM Wembley Mainline*
WS Wembley Suburban*


*Fringe box, signals not controlled in this simulation

#Partial control area simulated here.

In reality, South Tottenham's signals are prefixed S, however they have been altered in this simulation to distinguish them from Stratford signals.

Some data sourced from Phil Deaves' website .

Reference Section

North London Line V2.102 Signal Number Plan

- Thanks due to user 'Postal'

North London Line Scrolly (beta) Signal Number Plan Speed Limit Plan Schematic layout plan

These are Adobe Acrobat PDF files. If you don't have Adobe Acrobat Reader installed on your computer you can get a free download of the latest version from the Adobe website . When checked during March 2013, it had reached v11 and the download size was just under 50MB.

Connections plan

- Thanks due to user 'Danny252'


Scrolly Beta

This information relates to a Beta version of the simulation released a few years ago on the SimSig website. Since then, SimSig's Beta policy changed and the simulation has been removed from the Download area.

A beta version of NLL scrolly has now been released. Please note that, while it has more features than the paged version, it has not had a full core-code update (i.e. F11 and F8, among other things, are not available).


  • You now have full control over Bollo Lane and Acton Crossings.
  • The area past Acton Canal Wharf has been simulated, and the new finges are Willesden No.7, Cricklewood Curve Jn., Brent Curve Jn. and Neasden. Neasden Sidings have also been included.
  • Shunt route at Camden Road, and TC override on the Down platform.
  • New Fringe to Dalston Junction (for old TTs)
  • Simplified versions of Stratford station (and the line to Forest Gate Jn.), and possible diversionary routes between Acton Wells Jn. and Camden Road (via Willesden) and Dudding Hill Jn. to Junction Road Junction (via Cricklewood, West Hampstead and Carlton Road Junction). This gives you more control over diverting trains, and should avoid problems with trains diverted via Stratford appearing at the wrong place. These areas can be set to work automatically. Sim Logic prevents a train that is due to enter at Carlton Road Jn (for example) appearing 'on top of' a diverted train.
  • Trains to Willesden Old Oak Sidings must be routed to shunt signal WM1262.
  • Signal numbers are now accurate.
  • Slots have been introduced on Temple Mills Yards and single lines. You must request a slot to send a train to all of these, with the exception of Finsbury Park, Willesden No.7 Jn and Harringay.
  • Shunt movesto/from the Barnes Line possible at Richmond

This section contains details pertaining to the forthcoming beta and may not work or exist in the released version.

This is a hybrid simulation which allows timetables to be run from the 1980s to the present day.

At the time of writing the following should be noted:

  • The Dalston Junction connection no longer exists but is due to be re-instated as part of the East London Line works over the next few years.
  • Stratford Market Depot no longer exists (replaced by LUL's Jubilee line depot of the same name).
  • Stratford Low Level (exclusive) to North Woolwich (inclusive) is closed.
  • Semaphore areas such as Kew East, the Dudding Hill line, and parts of the Gospel Oak to Barking line have been replaced by colour light signalling in the simulation. This approximates the semaphore signalling in terms of headway.
  • The Channel Tunnel Rail Link connections have been added at Camden Road. These were only addedin the real thing a couple of years ago.

Each of the signalboxes in the simulation are single-manned. A client can take over any number of signalboxes and phone calls for that box will be redirected to that client.

Last edited by Steamer on 27/06/2020 at 11:35