Yorkshire on the Chattenden and Upnor Railway
narrow gauge railways at military establishments and former UK Government-owned explosives sites. These locations were often subject to the Official Secrets Act and other government restrictions, so many of them are less well documented.
The industrial use of narrow-gauge railways was quite extensive amongst the various military and civilian explosive factories, for example
ICI Nobel's works at Ardeer and the Agency Explosive Factories run by ICI Nobel in the Second World War. To give an example, the Ministry of Supply (MOS) Factory Dalbeattie used 30 gauge with a variety of bogie trucks mostly pushed by teams of three to six women. Stores, explosives, chemicals, rubbish and sewage, were all transported on this narrow-gauge system, which used at least 8 miles (13 km) of track.
Weapons range railways
DOE Okehampton Gun Ranges
DOE Redesdale Ranges target railway
Fort George Range
Principally a target railway, though also carries personnel and equipment around the ranges. At least 39 locomotives and powered trollies have worked here.
Lulworth area, Dorset, England
Electrically powered Rail Targetory System  (paras 14-18) visible on the OS Map, Google Earth and from surrounding hills.
National Rifle Association Bisley Tramways
The NRA originally had a temporary shooting range and railway on Wimbledon Common but in 1888 moved to Bisley. Initially using a Merryweather steam tram locomotive, later using diesel locomotives.
RAF Hell's Mouth target railway
 late 1930s
A target range railway operated by hand or rope-hauled in the dunes southeast of the airfield.
Romney Marsh weapons range railway
 before 1975
New Romney, England
Locomotive-worked network of lines across Romney Marsh
Armaments depots and ordnance factories
Eastriggs Depot railway 
Extensive WW II armaments depot line using parts of the site of the former HM Factory, Gretna. A sub-depot of CAD Longtown.
Priddy's Hard 
 about 1850
18 and also later 30
Ammunition transport railway, within the Royal Naval Armaments Depot, between store houses and piers. Eight battery-electric locomotives were used after 1929.
Internal rail system serving the dockyard.
Chattenden and Upnor Railway
Light railway serving Chattenden barracks and armament stores
Davington Light Railway
Short-lived metre-gauge line serving an Admiralty munitions factory. The three locomotives were sold to Brazil where at least one survived until 1988.
HM Factory, Gretna
Extensive WW I Cordite factory line
Lodge Hill and Upnor Railway
Served the construction of the Chattenden and Upnor Railway.
Royal Air Force Chilmark Depot railway
 late 1930s
Chilmark, Wiltshire, England
Extensive WW II armaments depot lines using underground Chilmark Quarries and above-ground storage at satellite site at Dinton, Wiltshire.
RAF Fauld Depot railway
Underground ammunition store during WWII with supply railway.
Royal Arsenal Railway  
18 and 24
Extensive internal rail system serving the Royal Arsenal.
RCAF Seaford Head target railway
 after 1939
Seaford Head, Wales
Horse drawn target range railway about 1 mile long.
RNAD Broughton Moor railway 
 before 1943
Broughton Moor, England
Locomotive-worked line hauling ammunition around the depot.
RNAD Dean Hill Depot railway  
 before 1942
West Dean, England
Locomotive-worked line hauling ammunition around the depot.
1950s - 2000
Approx 80 miles of internal rail system serving the World War II Cordite factories.
Royal Navy Holton Heath Cordite Factory
Holton Heath, England
Extensive explosives factory complex using battery electric and fireless steam locomotives
Royal Navy Stokes Bay railway
Stokes Bay, England
Steam locomotive worked line.
Royal Navy Underwater Weapons Establishment
Battery-electric locomotive worked line.
Vickers Engineering Wyke Regis Pier railway
 before 1921
Wyke Regis, England
Pier railway used to transport torpedoes from the factory to ships.
Deptford Special Reserve Depot
Extensive WW I food supply depot line. At least four steam locomotives worked here, two or three of which went to the Sand Hutton Light Railway after the war.
Bristol Channel, Wales
Fortification supply railway
Hoo Ness Tramway
 before 1914
Hoo Ness, England
Locomotive-worked tramway. May have been 30 gauge previously
Hurst Castle, England
Line for moving ammunition and supplies around the castle. Used hand and donkey hauled wagons. Much track still in situ.
South Heighton railway
Hand-worked line to aid construction of HMS underground command centre.
Steep Holm railway
Steep Holm, North Somerset, England
Fortification supply railway. Palmerston forts, shown on 1886 Ordnance Survey maps. Relaid in World War II. Finally Demolished 1946.
Kinmel Camp Railway
St. Asaph, Wales
Locomotive-worked construction railway for the Kinmel Camp
Longmoor Camp Railway
Early construction line used to assist in the demolition of army huts. Relaid as standard gauge starting in 1905.
Longmoor Military Railway
Narrow gauge line at the extensive railway training centre at Longmoor
Strensall Ranges, HQ
Strensall Training Centre,
Strensall, York, England
Principally Stores railway, to carry equipment around the ranges. 1165Yds long.
RAF Calshot Camp railway
Short line serving Calshot camp and pier. Steam locomotives were used, one of which is preserved on the Talyllyn Railway as "Douglas".
Royal Navy Haslar Hospital
 by 1910
Hand worked line to move ammunitions and stores around the hospital site.
British industrial narrow gauge railways British narrow gauge railways
↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6
Industrial Railway Society. (1979). Industrial Locomotives 1979: including preserved and minor railway locomotives. Industrial Railway Society. ISBN 0901096385.
↑ 2.0 2.1 2.2
"List of 2 ft 6 in gauge railways" . . http://www.pearcedale.com/c&b/SZ.html#uk
↑ 3.0 3.1 3.2
Mitchell, Vic and Smith, Keith (2003). Surrey Narrow Gauge including South London. Middleton Press. ISBN 1901706877.
Corser, W.J.L. (April 2003). Wings on Rails: Industrial Railways in the Logistics Support of Britain's Air Defence Forces. Arcturus Press. ISBN 0-907322-85-9.
Nicholson, Peter (1975). Industrial Narrow Gauge Railways in Britain. Bradford, Barton. ISBN 0-85153-236-5.
↑ 6.0 6.1 6.2
"List of 2 ft gauge railways worldwide" . . http://members.shaw.ca/twofooter/ww2ftrr.htm
"The Longtown Military Railway". Carforth: Tele Rail. 1994.
Semark, H.W. (1997). The Royal Naval Armament Depots of Priddy's Hard, Elson, Frater and Bedenham (Gosport, Hampshire): 1768 to 1977. Hampshire County Council. ISBN 1-85975-132-6.
↑ 9.0 9.1 9.2 9.3 9.4 9.5
Mitchell, Vic and Smith, Keith (2004). Hampshire Narrow Gauge including the Isle of Wight. Middleton Press. ISBN 1904474365.
↑ 10.0 10.1
Yeatman, D. (December 1966). "Lodge Hill & Upnor Railway". pp. 277–292.
Mitchell, Vic and Smith, Kevin (2000). Kent Narrow Gauge. Middleton Press. ISBN 1901706451.
"Marchwood & Chilmark Military Railways". Carforth: Tele Rail. 1994.
"Woolwich Arsenal Railway" . . http://www.royalarsenalwoolwich.co.uk/railways.htm
Clarke, B.R. and Veitch, C.C (1986). The Eighteen Inch Gauge Royal Arsenal Railway at Woolwich. privately published by B.R. Clarke. ISBN 0-948951-00-1.
"Visit Reports". November 2003. pp. 6–7.
"Dean Hill RNAD depot" . . http://www.subbrit.org.uk/sb-sites/sites/d/dean_hill_rnad/index.shtml
↑ 17.0 17.1
Mitchell, Vic and Smith, Keith (2006). Dorset and Somerset Narrow Gauge. Middleton Press. ISBN 1904474764.
↑ Rendell, Stan and Joan (1993).
Steep Holm: The Story of a Small Island. Stroud: Alan Sutton Publishing. ISBN 0-7509-0323-6
Hindley, Philip G. (September 1985). "The Kinmel Camp Railway". The Industrial Railway Society. pp. 309–322.
Farmer, Keith (March 1966). "Longmoor Military Railway". The Industrial Railway Society. pp. 195–205 . . http://www.irsociety.co.uk/Archives/9/longmoor.htm