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Mowlem

Mowlem is a British construction and civil engineering brand founded in London in 1822 and revived under new ownership in 2024.

Last updated August 31, 2026

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Overview

Mowlem is a British construction and civil engineering name with origins in the London contracting business established by stonemason John Mowlem in 1822. The company initially carried out paving, roadworks and other public works for London authorities, then expanded during the nineteenth century into larger and more prestigious engineering assignments. Its work included preparatory activities associated with Westminster Abbey and major public buildings, helping establish a reputation for dependable municipal and government contracting. The business received a Royal Warrant in 1902 and additional warrants in 1910 and 1920. For much of its early history, the company was managed by successive generations of the Mowlem and Burt families. George Burt and Sir John Mowlem Burt were among the figures associated with the development of the business into a substantial national contractor. The company was briefly incorporated in 1903, reverted to a private partnership in 1908, and became a publicly traded company in 1924. Its interwar and wartime work broadened its engineering credentials. During the Second World War, Mowlem undertook numerous British government contracts, including work on Mulberry harbour units, tunnels, runways and the Royal Ordnance Factory at Swynnerton. After the war, Mowlem developed a network of regional construction businesses, both through acquisition and through the creation of regional operating units. Its expansion included companies such as Rattee and Kett, E. Thomas, Ernest Ireland and McTay Engineering. In 1971, Mowlem began expanding internationally by acquiring a minority interest in the Australian contractor Barclay Brothers and later taking full control. The Australian operation became Barclay Mowlem and expanded across much of Australia and into Asia. The parent company was re-registered as John Mowlem and Co. plc in 1982. Mowlem diversified during the 1980s. It acquired scaffolding specialist SGB Group and entered private housebuilding through Unit Construction. The company also participated in major infrastructure developments, including the Docklands Light Railway in London through a joint venture with GEC. It owned and developed London City Airport, which was completed in 1986. However, the early-1990s recession caused severe losses, and Mowlem sold its housing division to Beazer in 1994. It also later disposed of SGB and other non-core operations. The company encountered renewed difficulties in the mid-2000s. Several prominent projects, including the Spinnaker Tower in Portsmouth and Bath Spa, experienced significant problems. In 2005, Mowlem issued multiple profit warnings and reported aggregate losses of £73.4 million. Its construction services activities were reviewed and reorganised into Mowlem Building, Mowlem Infrastructure and Mowlem Engineering, with approximately 300 positions eliminated. In December 2005, Carillion announced an agreement to acquire Mowlem for £291 million. The transaction was completed in 2006, after which the historical Mowlem company was absorbed into Carillion and the name was discontinued as an operating corporate entity. The Mowlem trademark was acquired in 2024 by BHM Construction International UK Ltd from Carillion's administrators. BHM subsequently began trading under the Mowlem name, giving the brand a new commercial life. The present-day Mowlem identity therefore combines a long-established British construction heritage with a new ownership and operating structure. Publicly available reference material does not establish the full scope, geographic footprint, leadership team or current project portfolio of the revived business.

History

Mowlem began in London in 1822 when stonemason John Mowlem established John Mowlem and Co. The early business focused on paving, roads and other local-authority work. During the nineteenth century it expanded into larger public and civic projects, including preparatory work connected with Westminster Abbey's Diamond Jubilee activities in 1887. The company's reputation led to a Royal Warrant from the Prince of Wales in 1902, followed by further warrants in 1910 and 1920. The business was operated for many decades by members of the Mowlem and Burt families. George Burt and Sir John Mowlem Burt were particularly associated with its growth as a major contractor. The company was incorporated briefly in 1903 but returned to private partnership status in 1908. It became a public company on the London Stock Exchange in 1924. Mowlem's public-works capabilities resulted in extensive wartime government work. During the Second World War it participated in the construction of Mulberry harbour units and also worked on the Royal Ordnance Factory at Swynnerton, tunnels, airfields and runways. The wartime contracts were reported collectively at approximately £29 million in value. After 1945, the company strengthened its national presence by building a network of regional contracting businesses. Acquisitions and regional expansion included Rattee and Kett of Cambridge in 1926, E. Thomas in the West Country in 1965, the creation of a northern region in Leeds in 1970, Ernest Ireland of Bath in 1977, and McTay Engineering and its marine subsidiary McTay Marine in the late 1970s. International expansion began in 1971, when Mowlem purchased a 40 percent interest in Australian contractor Barclay Brothers. It later acquired the remaining interest, and the business was renamed Barclay Mowlem. The Australian operation expanded across most mainland Australian states and into Asian markets. In 1982, the UK parent was re-registered as John Mowlem and Co. plc. The 1980s brought diversification. Mowlem bought scaffolding specialist SGB Group in 1986 and acquired Unit Construction, creating a major private-housebuilding operation that reached an annual sales rate of approximately 1,200 homes within two years. Mowlem also participated in infrastructure development through a joint venture with GEC that won a 1984 contract for London's automated Docklands Light Railway. The company owned and developed London City Airport, completed in 1986, and sold HSS Hire in 1993. A severe early-1990s recession resulted in losses exceeding £180 million between 1991 and 1993 and placed pressure on the company's banking covenants. In response, Mowlem sold its housing division to Beazer in 1994 and later disposed of SGB. The company subsequently concentrated more heavily on construction, civil engineering and infrastructure. Financial strain returned in the mid-2000s. Projects including the Spinnaker Tower in Portsmouth and Bath Spa encountered significant difficulties. Mowlem issued four profit warnings during 2005 and recorded losses of £73.4 million. Simon Vivian ordered a review of current projects and restructured construction services into Mowlem Building, Mowlem Infrastructure and Mowlem Engineering, eliminating around 300 jobs. Carillion announced its proposed £291 million acquisition of Mowlem in December 2005, and the deal was completed in 2006. Mowlem ceased to exist as an independent entity and its name was subsequently withdrawn from use. In 2024, BHM Construction International UK Ltd acquired the Mowlem trademark from Carillion's administrators and began trading under the name. The revived brand is distinct from the former listed construction company, and publicly available material provides limited information about its current management, projects and operations.

  • 2024

    Trademark revived under BHM Construction International

    [1]

    BHM Construction International UK Ltd acquired the Mowlem trademark and began trading under the brand.

  • 2006

    Absorption into Carillion

    [1]

    Carillion completed its acquisition of Mowlem, ending Mowlem's existence as an independent company.

  • 2005

    Restructuring and losses

    [1]

    Following project difficulties and £73.4 million of reported losses, Mowlem reorganised its construction services operations and cut approximately 300 jobs.

  • 1994

    Housing division sold

    [1]

    Mowlem sold its housing division to Beazer after recession-related losses and financial pressure.

  • 1986

    Diversification into scaffolding and housebuilding

    [1]

    Mowlem acquired SGB Group and Unit Construction, expanding into scaffolding and private residential development.

  • 1984

    Docklands Light Railway contract

    [1]

    A Mowlem-GEC joint venture received a contract to deliver London's automated Docklands Light Railway.

  • 1982

    Parent re-registered

    [1]

    The parent company was re-registered as John Mowlem and Co. plc.

  • 1971

    Expansion into Australia

    [1]

    Mowlem acquired a 40 percent interest in Australian contractor Barclay Brothers and later took full ownership.

  • 1940

    Wartime government construction

    [1]

    During the Second World War, Mowlem worked on Mulberry harbour units, tunnels, runways and the Royal Ordnance Factory at Swynnerton.

  • 1924

    Public listing

    [1]

    The company became publicly traded on the London Stock Exchange.

Products and positioning

A heritage British construction and civil engineering brand associated historically with public works, infrastructure, large-scale building and engineering projects.

  • Construction services · 1822

    Construction and civil engineering

    Mowlem's historic core was general construction and civil engineering for local authorities, public bodies and private clients. Its work covered roads, buildings, public facilities, infrastructure and large-scale engineering contracts. The company developed from a London municipal contractor into a national construction group with regional operating businesses.

  • Infrastructure

    Infrastructure construction

    The company undertook transport, civil-works and public-infrastructure projects, including participation in the Docklands Light Railway and wartime tunnels, runways and harbour units. Infrastructure was later represented within the Mowlem Infrastructure division established during the 2005 restructuring.

  • Building construction

    Building services

    Mowlem delivered building projects ranging from civic and public buildings to specialist facilities. In its final independent period, building work was organised under Mowlem Building, alongside infrastructure and engineering divisions.

  • Engineering

    Marine and heavy engineering

    Through McTay Engineering and McTay Marine, Mowlem developed capabilities in heavy engineering and shipbuilding-related work. Earlier wartime participation in Mulberry harbour construction also reflected its marine and industrial engineering capacity.

  • Residential construction · 1986

    Private housebuilding

    Mowlem entered private housebuilding through the acquisition of Unit Construction in 1986. The division reached a reported sales rate of roughly 1,200 homes per year before the early-1990s recession led to its sale to Beazer in 1994.

Brand decisions

  • 2024

    Revival of the Mowlem trademarkStrategy

    Background

    The historical Mowlem company had been absorbed into Carillion, whose assets and affairs were later handled by administrators.

    Action taken

    BHM Construction International UK Ltd acquired the Mowlem trademark and began trading under the Mowlem name.

    Aftermath

    The transaction restored Mowlem as a commercial construction brand, although detailed information about its current operations is limited.

  • 2005

    Construction-services restructuringStrategy

    Background

    Several high-profile projects encountered difficulties, and the company reported £73.4 million of losses during 2005.

    Action taken

    Mowlem reviewed ongoing projects, divided construction services into Mowlem Building, Mowlem Infrastructure and Mowlem Engineering, and eliminated approximately 300 jobs.

    Aftermath

    The restructuring preceded the agreement to sell Mowlem to Carillion later in 2005.

    Reported losses. £73.4 million loss (2005)

  • 2005

    Sale to CarillionM&A

    Background

    Mowlem was experiencing financial difficulties, while both companies had experience with private finance initiative projects.

    Action taken

    Carillion agreed to acquire Mowlem for £291 million, with completion in 2006.

    Aftermath

    Mowlem was absorbed into Carillion and its name was discontinued as an independent operating identity.

    Acquisition consideration. £291 million (Announced December 2005; completed 2006)

  • 1994

    Exit from private housebuildingStrategy

    Background

    A recession in the early 1990s caused substantial losses and increased pressure on Mowlem's financial structure.

    Action taken

    Mowlem sold its housing division to rival housebuilder Beazer and refocused on construction and engineering.

    Aftermath

    The disposal reduced the company's exposure to residential development and formed part of a broader response to financial pressure.

Sources1 sources

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