| L. & N. Gibbs |
1 |
1895–1896 |
Somerset |
Coal |
| L. C. Rees |
1 |
1940–1956 |
Neath Port Talbot |
Coal |
| La Porte Chemical Company |
1 |
1939–1963 |
Cumbria |
Barite, Lead |
| Ladywell Mining Company |
1 |
1871–1882 |
Shropshire |
Lead |
| Lafarge Aggregates |
1 |
|
Derbyshire |
Limestone |
| Lamb and Hutchinson |
1 |
from 1840 |
Tyne and Wear |
Coal |
| Lambert and Company |
2 |
1850–1894 |
Tyne and Wear |
Coal |
| Lambert, Nicholson & Co. |
3 |
1853–1880 |
Northumberland |
Coal |
| Lambton & Hetton Collieries Ltd |
5 |
1896–1947 |
Tyne and Wear, County Durham |
Coal, Fireclay |
| Lambton Collieries Ltd |
3 |
1896–1911 |
Tyne and Wear |
Coal, Fireclay |
| Lambton, Hetton & Joicey Collieries Ltd |
5 |
1924–1947 |
Tyne and Wear, County Durham |
Coal, Fireclay |
| Lancaster's Steam Coal Company |
2 |
1888–1947 |
Blaenau Gwent |
Coal |
| Lancaster, Speir and Company |
1 |
from 1892 |
Rhondda Cynon Taf |
Coal, Ironstone |
| Lanemark Coal Company |
1 |
to 1909 |
East Ayrshire |
Coal |
| Langdale Silver, Lead and Copper Company |
1 |
1912–1917 |
Cumbria |
Copper |
| Langham & Co. |
1 |
1885–1892 |
Gloucestershire |
Coal |
| Langness Copper Co. Ltd. |
1 |
|
Isle of Man |
Copper |
| Laporte Minerals |
6 |
1940–2009 |
Derbyshire, Cumbria, Surrey |
Fluorspar, Lead, Barite |
| Lassodie Coal Company |
1 |
1859–1860 |
Fife |
Coal |
| Lathkill Company |
1 |
1834–1851 |
Derbyshire |
Lead |
| Lathkill Dale Mining Company |
1 |
1830–1842 |
Derbyshire |
Lead |
| Leach and Weeks |
1 |
1890–1910 |
Northumberland |
Coal |
| Leadhills Silver-Lead Mining and Smelting Company |
1 |
1876–1901 |
South Lanarkshire |
Gold, Lead, Silver |
| Leeswood Cannel and Gas Coal Company Ltd |
1 |
1869–1896 |
Flintshire |
Cannel Coal, Coal |
| Leeswood Green Cannel Company Ltd |
1 |
to 1869 |
Flintshire |
Cannel Coal, Coal |
| Leeswood Green Colliery Company Ltd |
1 |
from 1923 |
Flintshire |
Cannel Coal, Coal |
| Leeswood Main Coal and Cannel Company |
1 |
from 1869 |
Flintshire |
Cannel Coal, Coal |
| Leicester M. Hutchinson & Co |
1 |
1863–1872 |
Cumbria |
Copper, Lead |
| Leiths (Scotland) Ltd |
1 |
|
Highland |
Marble |
| Levant Mining Company |
1 |
1820–1930 |
Cornwall |
Arsenic, Copper, Tin |
| Levant Tin Mines Limited |
1 |
1920–1930 |
Cornwall |
Arsenic, Copper, Tin |
| Leven Vale Company |
1 |
1872–1874 |
North Yorkshire |
Iron |
| Lewis & Phillips |
2 |
1825–1849 |
Shropshire |
Lead |
| Lewis and Morgan Partnership |
1 |
1878–1884 |
Blaenau Gwent |
Coal |
| Lewis Merthyr Consolidated Collieries Ltd |
1 |
1876–1947 |
Rhondda Cynon Taf |
Coal |
| Lewis Morris |
2 |
1746–1765 |
Ceredigion |
Lead, Silver, Zinc |
| Limmer and Trinidad |
1 |
1938–1958 |
Somerset |
Limestone |
| Linby Colliery Company Limited |
1 |
to 1947 |
Nottinghamshire |
Coal |
| Lincoln Stone Quarries |
1 |
from 1939 |
Lincolnshire |
Ironstone, Limestone |
| Lingholme Trust |
1 |
to 1932 |
North Yorkshire |
Coal |
| Lister Kaye family |
1 |
to 1917 |
West Yorkshire |
Coal |
| Littledean Woodside Coal Company |
2 |
1873–1884 |
Gloucestershire |
Coal |
| Littlejohn & Sons |
1 |
|
East Ayrshire |
Coal |
| Liverpool Dock Trustees |
1 |
from 1826 |
Dumfries and Galloway |
Granite |
| Lizard Serpentine Company |
1 |
1853–1893 |
Cornwall |
Serpentine, Talc |
| Llanelli Copperworks Co. |
3 |
1861–1907 |
Carmarthenshire |
Coal |
| Llangennech Brick and Tile Company |
1 |
1938–1939 |
Swansea |
Coal |
| Llangennech Colliery Co. |
1 |
1827–1874 |
Carmarthenshire |
Coal |
| Llay Main Collieries Ltd. |
1 |
1914–1926 |
Wrexham |
Coal |
| Lletty Shenkin Colliery Co. Ltd |
1 |
1865–1872 |
Rhondda Cynon Taf |
Coal |
| Llewellyn (Nixon) Ltd |
1 |
1929–1935 |
Rhondda Cynon Taf |
Coal |
| Lloyd Brothers |
1 |
1886–1924 |
Carmarthenshire |
Coal, Fireclay |
| Lluest Coal Company Ltd |
1 |
1880–1887 |
Bridgend |
Coal |
| Llwyn-on Colliery Company |
1 |
1921–1928 |
Neath Port Talbot |
Coal |
| Llwynllafrod Anthracite Collieries Limited |
1 |
from 1923 |
Powys |
Coal |
| Llynfi Coal and Iron Company |
1 |
1882–1889 |
Bridgend |
Coal, Ironstone |
| Llynfi, Tondu and Ogmore Coal and Iron Company |
2 |
1872–1878 |
Bridgend |
Coal, Ironstone |
| Llynvi Iron Company |
1 |
from 1841 |
Bridgend |
Coal, Ironstone |
| Lochaline Quartz Sand Ltd |
1 |
from 2012 |
Highland |
Silica Sand |
| Lochgelly Iron and Coal Company |
3 |
1854–1947 |
Fife |
Coal |
| Lochgelly Iron Company |
2 |
1851–1872 |
Fife |
Coal, Ironstone |
| Locket's Merthyr Collieries (1894) Ltd |
1 |
|
Rhondda Cynon Taf |
Coal |
| Locket's Merthyr Steam Coal Company |
1 |
1879–1932 |
Rhondda Cynon Taf |
Coal |
| Lockwood and Elliott |
1 |
1862–1946 |
West Yorkshire |
Coal |
| Loganlea Coal Company Limited |
3 |
1890–1905 |
West Lothian |
Coal, Fireclay, Ironstone |
| London and South Wales Colliery Company |
1 |
1875–1892 |
Caerphilly |
Coal |
| London and South Western Railway |
1 |
1874–1948 |
Devon |
Aplite, Granite |
| London Brick Company |
1 |
1920–1969 |
Cambridgeshire |
Brick Clay |
| London Lead Company |
20 |
1695–1902 |
Cumbria, County Durham, North Yorkshire |
Lead, Zinc, Barite |
| London Tin Syndicate Ltd. |
1 |
1927 |
Cornwall |
Tin |
| London, Midland and Scottish Railway |
1 |
1923–1934 |
Staffordshire |
Limestone |
| Londonderry Collieries Ltd |
3 |
1869–1947 |
County Durham, Tyne and Wear |
Coal |
| Long Meg Plaster and Mineral Company Ltd. |
1 |
1922–1939 |
Cumbria |
Anhydrite, Gypsum |
| Long Meg Plaster Company Ltd. |
1 |
from 1880 |
Cumbria |
Anhydrite, Gypsum |
| Long Rake Spar Mining Company |
1 |
|
Derbyshire |
Calcite, Fluorspar, Lead |
| Lord Bledisloe |
1 |
to 1930 |
Forest of Dean |
Coal |
| Lord Carrington |
1 |
|
Ceredigion |
Lead, Silver |
| Lord Cawdor |
1 |
from 1742 |
Carmarthenshire |
Lead, Zinc |
| Lord Dunsany and Partners |
1 |
1869–1901 |
County Durham |
Coal |
| Lord Eldon |
1 |
1884–1900 |
County Durham |
Coal |
| Lord Granville |
3 |
1870–1890 |
Staffordshire |
Coal, Ironstone |
| Lord Hatherton |
1 |
1897–1947 |
Staffordshire |
Coal |
| Lord Howden and Partners |
1 |
from 1839 |
County Durham |
Coal |
| Lord Ravensworth and Partners |
2 |
1821–1850 |
Tyne and Wear |
Coal |
| Lord St Oswald |
1 |
1860–1947 |
West Yorkshire |
Coal |
| The Lords Vernon |
2 |
1832–1935 |
Cheshire |
Coal |
| Lothian Coal Company |
3 |
1798–1947 |
Midlothian |
Coal |
| Loudon and Miller |
1 |
1875–1881 |
South Lanarkshire |
Coal |
| Loveston Colliery Co. Ltd. |
1 |
1932–1937 |
Pembrokeshire |
Anthracite, Coal |
| Low Hartsop Mining Company |
1 |
1866–1869 |
Cumbria |
Lead, Zinc |
| Lowland Lead Mines Ltd |
1 |
1950–1960 |
Dumfries and Galloway |
Lead, Zinc |
| Lowther family |
2 |
1684–1848 |
Cumbria |
Coal, Lead, Silver |
| Lucock & Carlton |
1 |
from 1860 |
Cumbria |
Coal, Fireclay, Ganister |
| Lundy Granite Company |
1 |
1863–1868 |
Devon |
Granite |
| Lunehead Lead & Barytes Co. |
1 |
1890–1900 |
County Durham |
Barite, Lead |
MineArchive