The electrical power industry in the United Kingdom was nationalised by the Electricity Act 1947, when over six hundred electric power companies were merged into twelve area boards.
The board's area was defined as: Leicestershire, Northamptonshire, Rutland and parts of Bedfordshire, Buckinghamshire, Derbyshire, Lincolnshire, Nottinghamshire, Staffordshire and Warwickshire.
The board's area was defined as: Cambridgeshire, Hertfordshire, Huntingdonshire, the Isle of Ely, Norfolk, Suffolk and parts of Bedfordshire, Buckinghamshire, Essex, Middlesex, Oxfordshire and the Soke of Peterborough.
The board's area was defined as: The administrative County of London and parts of Essex, Kent, Middlesex and Surrey.
Created under the provisions of the Electricity (Supply) Act 1919
The board's area was defined as: Anglesey, Caernarvonshire, Denbighshire, Flintshire, Merionethshire, Montgomeryshire and parts of Cardiganshire, Cheshire, Lancashire (including Liverpool) and Shropshire.
Created under the provisions of the Electricity (Supply) Act 1919
The board's area was defined as: Herefordshire, Worcestershire and parts of Gloucestershire, Oxfordshire, Shropshire, Staffordshire and Warwickshire (including Birmingham).
Created under the provisions of the Electricity (Supply) Act 1919
The board's area was defined as: Durham, Northumberland, the North Riding of Yorkshire and parts of the East and West Ridings of Yorkshire (including York).
The board's area was defined as: Cumberland, Westmorland and parts of Cheshire, Derbyshire, Lancashire (including Manchester) and of the West Riding of Yorkshire.
The board's area was defined as: Berwickshire, Clackmannanshire, Fife, Lothians (East Lothian, Midlothian, West Lothian), Peebles, Selkirkshire, and parts of Dunbartonshire, Roxburghshire and Stirlingshire.
The board's area was defined as: Parts of Kent, Middlesex, Surrey and Sussex.
Created under the provisions of the Electricity (Supply) Act 1919
The board's area was defined as: Brecknockshire, Carmarthenshire, Glamorganshire, Monmouthshire, Pembrokeshire, Radnorshire and part of Cardiganshire.
The board's area was defined as: Ayrshire, Dumfries-shire, Glasgow, Kirkcudbrightshire, Lanarkshire, Renfrewshire, Wigtownshire and parts of Dunbartonshire, Roxburghshire and Stirlingshire.
The board's area was defined as: Cornwall (including the Isles of Scilly), Devonshire and parts of Dorsetshire, Gloucestershire (including Bristol) and Somersetshire.
The board's area was defined as: Berkshire, Hampshire, the Isle of Wight, Wiltshire and parts of Buckinghamshire, Dorsetshire, Gloucestershire, Middlesex, Oxfordshire, Somersetshire, Surrey and Sussex.
The board's area was defined as: Parts of Derbyshire, Lincolnshire, Nottinghamshire and of the East and West Ridings of Yorkshire.
The following companies had interests in multiple and non-contiguous locations.
The Lancashire Electric Power Company was one of the largest private electricity companies in the UK. It was established in 1900 and generated and supplied electricity to 1,200 squares miles of Lancashire from 1905 until its abolition under nationalisation in 1948.
Rochdale was, from 1856 to 1974, a local government district coterminate with the town of Rochdale in the northwest of England.
The City of London Electric Lighting Company Limited (CLELCo) was a British electricity undertaking. It was formed in July 1891 to generate and supply electricity to the City of London and part of north Southwark. It owned and operated Bankside power station on the south bank of the river Thames. The company provided and stimulated demand for electricity, increased its generating capacity, and competed and co-operated with other electricity undertakings in London. The company was dissolved on 1 April 1948 when the British electricity industry was nationalised.
The Charing Cross and Strand Electricity Supply Corporation Limited was a British electricity undertaking. It was incorporated as a public company in 1889 to generate and supply electricity to parts of the City of Westminster, Holborn and later the City of London. From 1925 it worked jointly with other companies as part of the London Power Company. The company was abolished on 31 March 1948 when the British electricity industry was nationalised, and its assets were transferred to the British Electricity Authority and the London Electricity Board. The Charing Cross Corporation's Bow power station continued in operation until 1969.
The Electric Lighting Acts 1882 to 1909 are acts of the Parliament of the United Kingdom.
The County of London Electric Supply Company Limited (C.L.E.S.Co) was a British electricity undertaking. It was incorporated as a public company in 1891 to generate and supply electricity to parts of south west London and two parishes adjacent to the City of London. It owned and operated power stations at Wandsworth and City Road. From 1925 it cooperated with three other London companies, with the intention of centralising electricity generation in the new, high thermal efficiency, power station at Barking. The company was abolished in March 1948 upon the nationalisation of the British electricity supply industry.
The South Metropolitan Electric Light and Power Company Limited was a British electricity undertaking. It was established in 1904 upon the amalgamation of two south London companies which had supplied electricity in south east London since 1893. It owned and operated a power station at Blackwell Point and one at Penge. From 1925 it formed an association with three other London companies, with the intention of centralising electricity generation in the new, high thermal efficiency, power station at Barking. The South Metropolitan Company was abolished in March 1948 upon the nationalisation of the British electricity supply industry.
The South London Electric Supply Corporation Limited was a British electricity undertaking. It was established in 1896 to supply electricity to the parish/borough of Lambeth in south London. The Corporation owned and operated a power station at Loughborough Junction. From 1925 it formed an association with three other London companies to centralise electricity generation in the new, high thermal efficiency, power station at Barking. The South London Electric Corporation was abolished in March 1948 upon the nationalisation of the British electricity supply industry.
South Shields power station supplied electricity to the borough of South Shields and the surrounding area from 1896 to 1958. It was owned and operated by South Shields Corporation until the nationalisation of the British electricity supply industry in 1948. The power station was redeveloped several times to meet increasing demand It was decommissioned in 1958.
Leeds power station, also known as Whitehall Road power station, supplied electricity to the city of Leeds and the surrounding area from 1893 to 1965. It was initially built, owned and operated by the Yorkshire House-to-House Electricity Company Limited. Leeds Corporation took over the electricity undertaking in 1898 and generated and distributed electricity until the nationalisation of the British electricity supply industry in 1948. The power station was redeveloped several times to meet increasing demand for electricity.
Aberystwyth power station supplied electricity to the town of Aberystwyth from 1895 to the 1970s. The oil-engine station was operated by a succession of private and public owners including Aberystwyth Corporation prior to the nationalisation of the electricity industry in 1948. The power station, with an ultimate capacity of 5 MW, was redeveloped as demand for electricity grew and old plant was replaced.
Newbury power station supplied electricity to the town of Newbury, Berkshire and the surrounding area from 1905 to 1970. It was owned and operated by a succession of public and private organisations. It comprised, at various times, hydro-electric, gas engine and diesel engine powered plant with a maximum output capacity of 2.57 MW.
The Shropshire, Worcestershire and Staffordshire Electric Power Company was an electricity generating and supply organisation that operated in the West Midlands and South Wales. It was established in 1903 and was dissolved as a consequence of the nationalisation of the British electricity supply industry in 1948.
Southport power station supplied electricity to the town of Southport and the surrounding area from 1894 to the late 1960s. The power station was built by the Southport Corporation which operated it up to the nationalisation of the British electricity supply industry in 1948. Birkdale power station was operated by the Birkdale District Electric Supply Company Limited and originally supplied Birkdale Urban District until the district was incorporated into the Borough of Southport in 1911.
Woking power station supplied electricity to the Borough of Woking and the surrounding area from 1890 to 1960. The power station was operated by the Woking Electric Supply Company Limited until the nationalisation of the British electricity industry in 1948. It was redeveloped after the First World War to meet the increased demand for electricity.
The Electric Supply Corporation Limited was an electricity industry holding company that operated from 1897 until 1948. The corporation and its subsidiary companies generated and supplied electricity to towns and districts in Scotland and England.
The Midland Electric Light and Power Company Limited was established in 1881 to build and operate an electric lighting installation in Leamington Spa and Birmingham, England. It was abolished upon nationalization of the electricity supply industry in 1948.
The British Power and Light Corporation Limited, also known as the British Power & Light Corporation (1929) Limited was registered in 1929 to acquire a controlling interest in electricity undertakings in North Wales; East Suffolk; South Somerset; Trent Valley and High Peak; West Hampshire; and Ringwood, Hampshire. The corporation operated for 19 years and was abolished upon the nationalisation of the British electricity supply industry in 1948.
The Electrical Finance and Securities Company Limited was a UK electricity holding company which provided financing to electricity undertakings to enable them to start supplies of electricity. Its subsidiary companies were in south east England, Lincolnshire and south Scotland. It was registered on 8 June 1914 and was abolished upon nationalisation of the electricity industry in 1948.
Christy Brothers and Company Limited was a UK electricity engineering company which provided equipment, staffing and management to a number of electricity undertakings, worked as subsidiary companies, in Cornwall, Devon, Somerset and Suffolk.