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Signal Fact 30

The Norwich & Yarmouth Railway introduced block telegraph working in 1848 using Cooke & Wheatstone 1830s style instruments.

The instruments were used for general messages as well as authorising train movements.

This page should be regarded as “Work in Progress”. The webmaster will welcome additional information for this page.


Backtrack 2021 June.
Location Magazine
Ladbroke Grove (GWR) Modern Railways 2009 October.
Lady Victoria Pit NB060 Steam Days 2012 December.
Laira Junction (GWR) Backtrack 2010 September.
Lairg HR020 Backtrack 2015 June.
Laisterdyke GN360a Steam Days 2021 April.
Backtrack 2016 August.
Steam Days 2011 December.
Lakenheath GE120 Norfolk News 2012 September.
Railway Magazine 2012 August.
Railway Magazine 2010 September.
Lakeside FN006 Backtrack 2016 August.
Lamb's Siding NW110 British Railways Illustrated 1997 December.
Lambrigg NW890 Cumbrian Railways Journal 2007 May.
Lamport Ironstone Sidings NW124 Railway Bylines 2012 April.
Lanark (Racecourse) CA130 Steam Days 2014 January.
Lancaster NW860 Steam World 2008 August.
Steam World 2002 April.
Lane End Crossing (NER) Modern Railways 2010 August.
Langbank CA450 Railway Archive 2013 Issue 38.
Langford Bridge British Railways Illustrated 2009 April.
Langley (GWR) Backtrack 2010 October.
Steam World 2008 September.
Langley Crossing GW111 Backtrack 2013 September.
Langley Green GW751 Backtrack 2011 September.
Railway Magazine 2011 March.
Langstone (LSWR) Backtrack 2010 December.
Railway Bylines 2010 June.
Langstone Bridge LB095 Backtrack 2016 March p176.
Railway Bylines 2015 August.
Steam Days 2015 June.
Railway Magazine 2012 (Best of 1).
Southern Way 2012 19.
Southern Way 2012 issue 17.
Railway Bylines 2010 June.
Railway Bylines 2008 March.
Steam World 1982 June.
Langwith Junction GC110 Steam Days 2013 March.
British Railways Illustrated 2013 February.
LNER Journal 2012 Autumn.
Langworth Rail 2008 September 10.
Lansdown Junction (MR) Midland Railway Journal 2009 Autumn.
Lapworth GW730 British Railways Illustrated 2012 September.
Backtrack 2011 September.
Backtrack 2009 October.
Steam Days 2008 June.
Steam Days 2007 November.
Larbert, Larbert Junction CA490 Railway Magazine 2013 April.
Railway Magazine 2012 October.
Rail 2008 September 24. Railway Magazine 1966 August.
Larkhall CA241 Steam Days 2015 October.
True Line 2006 92.
Latchmere Junction WE001 Southern Way 2013 issue 22.
Southern Way 2012 19.
Launceston (LSWR) Railway Bylines 2009 October.
Lavenham GE220 Backtrack 2021 April.
Backtrack 2011 August.
Lawley Street MR252 Backtrack 2015 November.
Lawrence Hill MR370 Steam Days 2015 November.
Lea JN040 Railway Archive 2012 Issue 36.
Leamington Spa Backtrack 2007 February.
Leamington Spa Avenue RoadNW310 British Railway Journal 2013 issue 77.
Leamington Spa General GW730 British Railways Illustrated 2015 November.
Steam Days 2015 September.
British Railway Journal 2013 issue 77.
Backtrack 2011 October.
Steam World 2009 December.
Modern Railways 2009 November.
Steam World 2009 August.
Leasowe Rail 2008 August 13.
Leatherhead British Railways Illustrated 2008 October.
Lechlade Backtrack 2008 July.
Ledbury GW712 Rail 2020 907.
Railway Magazine 2013 November.
Railway Magazine 2013 June.
Railway Magazine 2013 May.
Railway Archive 2012 Issue 36.
Steam Days 2011 December.
Backtrack 2009 May.
Backtrack 2008 January.
Ledbury North End GW712 Steam Days 2011 December.
Backtrack 2009 August.
Ledston (NER) Steam Days 2010 September.
Backtrack 2010 June.
Lee Spur Junction SE001 Southern Way Preview.
Leeds Rail 2008 October 8.
British Railways Illustrated 2008 August.
Rail 2008 July 29.
Leeds Central GN320 Backtrack 2010 August.
Steam Days 2009 December.
British Railways Illustrated 2008 August.
Steam World 1993 July.
Leeds City Backtrack 2010 June.
Steam World 2008 October.
British Railways Illustrated 2008 August.
Steam Days 2008 June.
Railway Magazine 2007 November.
Steam World 1998 October.
Leeds Holbeck Steam Days 2008 June.
Leeds Marsh Lane (NER) Steam Days 2010 September.
Leeds Wellington MR880 Backtrack 2012 July.
British Railways Illustrated 2012 January.
Leegate MC010 Steam Days 2015 October.
Leek (NSR) Backtrack 2008 December.
Leek Brook NS020 Railway Magazine 2012 December.
Railway Magazine 2010 September.
Railway Bylines 2009 January.
Leeman Street (GER) Backtrack 2007 April.
Leeming Bar Steam Railway 2009 May.
Lees Lane Crossing SW078 Southern Way Preview.
Legbourne GN110 Railway Archive 2012 issue 35.
Leibmitz (Austria) Railway Magazine 1966 August.
Leicester Belgrave Road Backtrack 2009 June.
Leicester Central GC020 British Railways Illustrated 2015 August.
British Railways Illustrated 2010 June.
Steam World 2009 December.
Leicester MR150 Backtrack January 2021.
Modern Railways 2016 October.
Railway Magazine 2010 05.
Leigh Bridge Railway Modeller 1972 April.
Leigh-on-Sea MR040 British Railways Illustrated 2013 November.
Great Eastern Journal 2013 January.
Leigham Junction LB004 Southern Way 2016 Issue 33 *.
* wrongly captioned Knight Hill Sidings.
Leighton Buzzard NW110 Steam Days 2017 January.
Lenwade MG030 M&GN Bulletin 2012 April.
M&GN Bulletin 2011 May.
Joint Line 2007 Autumn.
Leominster SH001 Railway Bylines 2008 October.
Leslie (NBR) Backtrack 2011 May.
Lesmahagow CA207 Steam Days 2015 October.
Letchworth GN035 Railway Archive 2011 issue 33.
Leven Cumbrian Railways Journal 2006 October.
Levisham (NER) Backtrack 1999 September.
Lewes LB120 Map Backtrack 2017 January.
Railway Magazine 2016 September.
Steam Days 2015 October.
Railway Bylines 2013 November.
Steam Days 2013 October.
Backtrack 2013 April.
Backtrack 2012 January.
Southern Way 2011 issue 14.
Modern Railways 2011 April.
Southern Way 2010 issue 12. Steam World 2000 August.
Leyburn NE237 Backtrack 2013 April.
Leyton MR021 British Railways Illustrated 2013 June.
Leyton (LUL Central) Backtrack 2008 June.
Leytonstone MR021 British Railways Illustrated 2013 June.
Great Eastern Journal 2007 October.
Lhanbryde (HR) Steam Days 2009 October.
Lichfield Trent Valley NW180 Railway Bylines 2011 August.
Railway Magazine 2008 August.
Rail 2008 June 18.
Lidlington NW140 Backtrack 2016 September.
Railway Bylines 2012 September.
Rail 2008 October 8.
Limerick GX060 Modern Railways 2009 September.
Limerick Junction GX040 Backtrack 2015 November.
Limpley Stoke GW193 Steam World 2012 November.
Linby Colliery MR640 Railway Magazine 2016 January.
Lincoln area Great Eastern Journal 2008 July.
Lincoln Central GE140 Rail Express 2020 July.
Modern Railways 2011 May.
Rail 2008 July 2.
Railway Magazine 2007 October.
Lincoln Goods Steam Days 2009 June.
Lincoln High Street GE140 Railway Observer 2013 November.
Lincoln St Marks MR610 Backtrack 2007 February.
Lincoln Signalling Centre Rail 2008 September 10.
Lingfield LB107 Railway World 1970 October.
Lingwood GE140 Railway Bylines 2016 May.
Norfolk Railway Society 2013 March.
Great Eastern Journal 2007 April.
Linton GE052  
Linton Colliery (NCB)  
Lipson Junction GW270 Southern Way 2012 19.
Steam World 1991 January.
Liskeard GW300 Modern Railways 2016 August.
Backtrack 2016 February.
British Railways Illustrated 2015 November.
Modern Railways 2013 March.
Modern Railways 2012 September.
Liskeard (Looe Branch) GW301 Railway Bylines 2016 October.
Railway Magazine 2013 February.
Rail issue 712.
Steam Days 2009 October.
Liss (LSWR) Backtrack 2009 January.
Little Bytham MG003 Steam Days 2016 December.
Little Mill Junction (GWR) Backtrack 2007 November.
Little Somerford GW120 Steam Days 2015 October.
Backtrack 2010 September.
Littlehampton LB092 Steam Days 2012 February.
Railway Magazine 2008 March.
Littleport (GER) Great Eastern News 2009 Spring.
Rail 2008 June 4.
Littleworth GN090 Railway Magazine 2015 June.
    (wrongly captioned Littlethorpe)
Modern Railways 2010 September.
Liverpool Exchange Steam World 2008 August.
Backtrack 2007 July.
Liverpool Lime Street NW620 British Railways Illustrated 2009 August. Steam World 2002 May.
Llanbadarn Crossing CM080 Steam Days 2008 October.
Llanbedr & Pensarn CM050 Steam Days 2007 November.
Llanbister Road NW290 Steam Days 2015 December p38.
Llanbrynmair CM040 Steam World 2007 April.
Llandeilo / Llandilo GW640 Steam Days 2016 May.
Llandenny GW384 Steam Days 2020 September.
Llanderfel
Llandovery NW290 Backtrack 2013 November.
Llandrindod Wells NW290 Modern Railways 2016 September.
Llandudno NW467 Modern Railways 2016 October.
Llandudno Junction NW460 Modern Railways 2021 May.
British Railways Illustrated 2013 December.
Steam Days 2012 December.
Raiway Magazine 2012 June.
Steam Days 2010 October.
Rail Express 2009 June.
Steam World 2003 May.
Llanelli (GWR) Steam Days 2010 July.
Steam Days 2009 August.
Llanfair Caereinion CM015 Backtrack 2020 October.
Llanfairfechan NW500 Steam Days 2010 October.
Llanfechain CM012 Great Western Railway Journal 2009 Summer.
Llanfihangel GW430 Railway Archive 2009 23.
Llangadock / Llangadog GW641 Steam Days 2016 May.
Llangedwyn CM005 Steam Days 2009 June.
Llanfyllin CM012 Backtrack 2012 January.
Railway Magazine 2010 October.
Backtrack 2000 March.
Llanglydwen GW669 Backtrack 2016 May.
Llangollen GW844 Steam Days 2011 May.
Railway Magazine 2007 December.
Llangollen Goods Junction GW844 Railway Magazine 2012 May.
Railway Magazine 2010 November.
Llangunllo NW290 See Llangynllo below.
Llangybi NW512 Backtrack 2010 July.
Llangynllo NW290 Steam Days 2015 December p35.
Llanrhaiadr CM005 Steam Days 2009 June.
Llanrhystyd Road GW663 Steam Days 2011 July.
Llansantffraid CM012 Great Western Railway Journal 2009 Summer.
Llanvihangel Backtrack 2009 March.
Llanwrtyd Wells NW290 Steam Days 2015 December p42.
Llynclys CM001 Railway Bylines 2016 December.
Steam Days 2009 June.
Llynvi Junction Railway Bylines 2008 March.
Llanymynech (CR) Railway Bylines 2011 February.
LNER Steam World 2008 September.
Loanhead (NBR) North British 104.
Loch Awe CA521 Railway Magazine 2009 March.
Steam World 1983 May.
Loch Long Steam Days 2007 November.
Lochskerrow PW001 Railway Magazine 1966 January.
Steam Days 2016 February.
Backtrack 2009 May.
Railway Magazine 1966 January.
Lochluichart HR024 Railway Archive 2012 issue 34.
Lockerley Railway Modeller 1971 October.
Lockerbie CA030 British Railways Illustrated 2016 October.
Loco Junction (Barrow) British Railways Illustrated 2008 January.
Loco Junction SW001 Backtrack 2016 September.
Steam Days 2013 March.
Locomotive Yard NE001 LNER Journal 2012 Winter.
Lodge Hill GW213 Railway Modeller 1970 October.
Lolham GN120 Modern Railways 2012 December.
Great Northern News 2012 July.
Backtrack 2008 September.
London Blackfriars / St.Paul's SE106 Railway Archive 2012 issue 34.
Railway Archive 2011 issue 33.
Rail 2008 July 29.
London Bridge LB001 SE001 Railway Magazine 2020 September.
Modern Railways 2015 October.
Railway Observer 2012 April.
Southern Way issue 18.
Southern Way 2012 issue 17.
Rail 2008 July 16.
Backtrack 2007 September.
London Broad Street NW020 Steam Days 2015 September.
Railway Archive 2013 41.
Backtrack 2012 January.
Steam World 2007 April.
London Cannon Street SE004 Southern Way 2016 Issue 33.
Steam Days 2013 March.
Southern Way 2013 issue 21.
Southern Way 2012 issue 17.
Backtrack 2007 April.
Archive 1998 June.
Railway Magazine 1966 September.
Railway Magazine 1966 August.
Railway Magazine 1926 August.
Railway Magazine 1926 July.
London Charing Cross SE001 Southern Way 2016 05 issue 35.
Southern Way 2012 issue 17.
Southern Way 2011 issue 13.
Steam Days 2010 May.
Backtrack 2010 February.
Rail 2008 March 26.
Archive 1998 June.
British Railways Illustrated 1998 February.
London Euston NW001 Railway Archive 2013 Issue 38.
Rail 2008 May 21.
London Fenchurch Street GE160 Railway Magazine 2020 September.
Backtrack 2008 May.
Backtrack 2007 April.
London Fields GE020 Modern Railways 2011 June.
London Holborn Viaduct SE106 Southern Way 2008 issue 4.
London Kings Cross GN001 Steam Days 2020 November.
British Railways Illustrated 2016 December.
British Railways Illustrated 2016 July.
Backtrack 2013 October.
Great Northern News 2013 July.
LNER Journal 2012 Winter.
Steam Days 2012 September.
Back Track 2012 August.
LNER Society Journal 2012 Spring.
Railway Magazine 2011 November.
British Railways Illustrated 2011 February.
British Railways Illustrated 2011 January.
Modern Railways 2010 September.
British Railways Illustrated 2010 July.
British Railways Illustrated 2009 December.
Modern Railways 2009 December.
British Railways Illustrated 2009 November.
British Railways Illustrated 2009 September.
Steam Days 2009 September.
Steam World 2009 September.
Backtrack 2009 May.
Great Northern News 2009 January-February.
Rail 2008 June 18.
Great Northern News 2008 May-June.
Steam World 2002 May.
Steam World 2001 February.
Steam World 2001 January.
Steam World 1998 September.
British Railways Illustrated 1998 August.
Railway Magazine 1966 October.
Railway Magazine 1962 January.
London Liverpool Street GE001 Steam World 2009 November.
Steam World 2009 August.
Steam World 2008 October.
British Railways Illustrated 1998 September.
London Marylebone GC001 Backtrack 2016 August.
British Railways Illustrated 2013 July.
London Paddington GW001 Backtrack 2013 June.
British Railways Illustrated 2010 February.
British Railways Illustrated 2009 December.
British Railways Illustrated 2009 November.
Steam Days 2009 November.
Modern Railways 2009 October.
Great Western Railway Journal 2009 Autumn.
Great Western Railway Journal 2009 Summer.
British Railways Illustrated 2009 May.
Steam Days 2009 April.
Railway Magazine 2008 October.
Steam World 2003 July.
Railway Magazine 1933 December.
Railway Magazine 1933 July.
Railway Magazine 1926 August.
London Road (Derby) MR205 British Railways Illustrated 2013 September.
London Road (Nottingham) MR604 British Railways Illustrated 2013 December.
Steam World 2009 December.
British Railways Illustrated 2008 September.
London St.Pancras MR001 Railway Bylines 2016 September.
Steam Days 2015 June.
Midland Railway Journal 2013 Summer.
Midland Railway Journal 2012 Winter.
British Railways Illustrated 2012 June.
British Railways Illustrated 2012 May.
Backtrack 2010 May.
Railway Magazine 2010 05.
Railway Magazine 2010 April.
Steam Days 2010 February.
Backtrack 2009 January.
Modern Railways 2002 December.
Railway Magazine 1962 September.
London Victoria LB001 Backtrack 2020 December.
British Railways Illustrated 2010 February.
Steam Days 2009 February.
Southern Way issue 6.
Archive 1998 June.
Railway Magazine 1927 April.
London Victoria SE101 Southern Way 2016 Issue 33.
British Railways Illustrated 2011 January.
Backtrack 2010 April.
Southern Way 2008 issue 4.
Steam World 2003 April.
Steam World 2002 July.
London Waterloo SW001 Steam Days 2020 November.
Southern Way 2016 05 issue 35.
Railway Magazine 2013 Christmas.
Steam Days 2010 February.
Steam World 2009 December.
Backtrack 2009 November.
Steam World 2009 August.
British Railways Illustrated 2009 May.
Steam Days 2009 April.
Rail 2008 August 27.
Southern Way 2008 issue 2.
Backtrack 2008 April.
Southern Way 2007 issue 1.
Steam World 2005 July.
Archive 1998 June.
British Railways Illustrated 1998 February.
Steam World 1997 January.
Steam World 1993 May.
Steam World 1993 April.
Railway Magazine 1966 June.
Railway Magazine 1966 March.
Railway Magazine 1927 June.
Railway Magazine 1926 December.
Railway Magazine 1898 August.
Long Marston GW697 Steam Days 2016 September.
Railway Magazine 2016 August.
Steam World 1997 January.
Long Meg Railway Magazine 2008 May.
Long Melford GE220 Backtrack 2017 January.
Steam Days 2016 August.
Backtrack 2013 February.
Long Sutton MG004 M&GN Bulletin 2012 April.
M&GN Bulletin 2011 December.
M&GN Bulletin 2011 September.
M&GN Bulletin 2011 March.
Steam World 1999 March.
Longbridge MR270 Rail 2008 August 27.
Railway Magazine 2007 December.
Longdon Road GW693 Steam World 1997 January.
Longhedge Junction SE105 Southern Way 2013 issue 22.
Steam World 2002 April.
Longmoor Downs LMR01 Southern Way 2013 issue 22.
Backtrack 2000 March.
Longniddry NB001 Backtrack 2013 August.
North British 103.
Longparish SW121 Southern Way 2008 issue 2.
Longsight NW740 Steam World 1992 November.
Looe GW303 Railway Bylines 2010 March.
Steam Days 2009 October.
Steam World 1993 July.
Lossiemouth GO024 Backtrack 2011 November.
Lostock Hall LY220 Backtrack 2009 September.
Lostock Junction LY110 Backtrack 2016 August.
Lostwithiel GW300 Modern Railways 2020 August.
Modern Railways 2018 June.
Railway Magazine 2016 April.
Modern Railways 2013 October.
Railway Magazine 2013 January.
Railway Magazine 2010 05.
Rail 2008 July 16.
Backtrack 2007 April.
Loudon Road (LNWR) Backtrack 2011 June.
Loudwater GW072 Steam World 1993 July.
Railway Magazine 1933 September.
Loughborough GC020 Railway Magazine 2015 November.
Backtrack 2011 January.
Railway Magazine 2008 September.
Railway Magazine 2008 March.
Railway Magazine 2007 November.
Loughborough MR150 Raiway Magazine 2012 June.
Louth GN110 Backtrack 2008 April.
RSHS Bulletin 2001 34-5.
Backtrack 2000 May.
Lovers Walk LB070a Steam Days 2012 October.
Low Fell NE420 British Railways Illustrated 2013 April.
Steam Railway 2008 Feb-Mar.
Low House Crossing Rail 2008 June 4.
Low Moor LY300 Railway Archive 32.
Low Row (NER) Backtrack 2010 February.
Lowdham MR610 Railway Magazine 2020 December.
Modern Railways 2016 November.
Railway Magazine 2011 August.
Railway Magazine 2007 November.
Steam World 2006 June.
Lower Sydenham SE007 Railway World 1970 October.
Lowestoft North MG013 Railway Magazine 1966 January.
Lower Darwen LY100 British Railways Illustrated 2012 April.
Lower Darwen Engine Shed LY100 British Railways Illustrated 2012 April.
Lowestoft Central GE142 Railway Magazine 2011 December.
Rail 2011 September.
Railway Magazine 2010 September.
Railway Magazine 2007 October.
Lowton Junction NW551 Steam Days 2020 December.
Ludborough GN110 Railway Magazine 2011 July.
Luddendenfoot (LYR) Backtrack 2011 January.
Ludgate Hill SE106 Railway Magazine 1898 December.
Ludgershall MW010 Backtrack 2015 December.
Steam Days 2011 September.
Backtrack 2007 January.
Luffenham MR101 Railway Archive No.47 2015.
Luffenham Junction MR101 Steam World 1996 April.
Railway Magazine 1966 April.
Lugton GB001 Railway Magazine 1962 December.
Luling (Texas) RSHS Bulletin 2003 36-1.
Lumphinnans NB640 Steam World 1991 August.
Lustleigh GW260 Backtrack 1999 September.
Luton (GNR) British Railways Illustrated 2011 March.
Railway Bylines 2010 September.
Luton MR070 Steam World 2009 August.
Luxor (Egypt) Railway Magazine 2011 July.
Luxulyan GW310 British Railways Illustrated 1997 December.
Lydd SE046 Backtrack 2012 October.
Steam Days 2007 December.
Lydford GW275 SW150 Railway Magazine 2020 May.
Lydney GW390 Railway Archive 2012 Issue 36.
Lydney Junction SV001 Railway Magazine 2016 November.
Lyme Regis (LSWR) Steam Days 2010 February.
Railway Bylines 2009 February.
Lymington Junction SW100 Southern Way Issue 20.
Southern Way 2008 issue 2.
Lymington Pier SW105 Backtrack 2012 November.
Southern Way 2008 issue 2.
Steam Days 2007 November.
Steam World 2007 June.
Steam World 2006 June.
Railway Modeller 1970 June.
Lymington Town SW105 Southern Way 2013 issue 24.
Southern Way 2008 issue 2.
Lympstone Steam World 2009 June.
Lyndhurst Road SW100 Railway Magazine 1966 November.
Lynemouth Backtrack 2009 August.
Industrial Railway Record 2007 March.
Lynton LA001 Southern Way 2013 issue 21.
Steam Days 2010 August.

 




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