Glasgow, Scotland's largest city and historic industrial powerhouse, has spent the last century reinventing itself from shipbuilding capital of the British Empire to a diversified modern economy. The Clyde no longer launches steamers, but the city now hosts headquarters across energy, engineering, financial services, premium spirits, brewing, broadcasting, and elite sport. Below are ten of the most significant businesses that call Glasgow home, each helping to keep the city's industrial DNA visible in a 21st-century setting.
1. Aggreko - The World Leader in Temporary Power
Location : Sentinel Building, 103 Waterloo Street, Glasgow Founded : 1962 Status : Private (taken private 2021)
Aggreko is a global leader in temporary and modular energy solutions, founded in the Netherlands in 1962 and headquartered in Glasgow for most of its modern history. The business was spun off from Christian Salvesen Group as a separate public company in 1997 and went on to become a FTSE 100 constituent before being taken private in 2021 by TDR Capital and I Squared Capital in a £2.3 billion deal.
The company designs, builds, and rents temporary power generation, heating, cooling, and energy storage systems for customers ranging from data centres and utilities to mining operations, music festivals, and Olympic Games organising committees. It operates in over 80 countries from a global fleet of mobile generators, chillers, and modular power systems.
Glasgow Anchor : Aggreko moved its registered office to a brand-new headquarters at the Sentinel Building on Waterloo Street in June 2025, doubling down on Glasgow city centre as its global head office despite recent ownership changes.
Why it matters : Aggreko is one of the most globally recognisable engineering services companies headquartered in Scotland, and its city centre relocation reinforces Glasgow's reputation as a hub for industrial services with international reach.
2. Arnold Clark - The UK's Largest Independent Car Dealer
Location : 454 Hillington Road, Hillington Park, Glasgow Founded : 1954 Employees : ~10,000
Arnold Clark Automobiles was founded in 1954 by Sir Arnold Clark CBE, who began by selling second-hand cars from a single Glasgow showroom and grew the business into the UK's largest independent car retailer. The group remains family-owned today, with Sir Arnold's daughter Eddie Hawthorne serving as Chief Executive after his death in 2017.
The business operates over 200 dealerships across the UK, representing more than 25 manufacturer franchises including BMW, Ford, Volkswagen, Hyundai, and Toyota. Annual new and used vehicle sales exceed 250,000 units, making Arnold Clark one of Europe's largest privately-owned automotive retailers by volume.
Operational Scale : The Hillington Park head office in Glasgow houses the central finance, marketing, IT, and used-car operations functions for the entire UK network, with around 10,000 group-wide employees including those at the dealerships.
Why it matters : Arnold Clark proves that a privately-owned, regionally-rooted business can compete at national scale with publicly-listed retail groups, and remains one of Scotland's largest single private-sector employers.
3. ScottishPower - The Iberdrola UK Energy Arm
Location : 320 St. Vincent Street, Glasgow Founded : 1989 (at privatisation) Parent : Iberdrola (Spain)
ScottishPower was created in 1989 from the privatisation of the South of Scotland Electricity Board, and grew through the 1990s by acquiring water utility Southern Water and US energy group PacifiCorp. The business was acquired by Spanish utility Iberdrola in 2007 for £11.6 billion, and now serves as Iberdrola's primary UK platform.
The company spans generation, transmission, distribution, and retail supply of electricity across the UK, with around 5 million customer accounts on the retail side. ScottishPower Renewables, the group's renewables arm, is one of the UK's largest onshore wind operators and a major investor in offshore wind including the East Anglia Hub projects.
Headquarters : The current St. Vincent Street tower opened in 2015. At 17 storeys it was the largest office building constructed in central Glasgow in over 25 years, and houses around 1,800 staff across corporate functions, retail, and renewables.
Why it matters : ScottishPower anchors a critical piece of UK national energy infrastructure leadership inside Glasgow city centre, and its renewables division is one of the biggest names in the UK's energy transition.
4. Weir Group - FTSE 250 Engineering Heritage
Location : 1 West Regent Street, Glasgow Founded : 1871 Stock Exchange : LSE: WEIR (FTSE 250)
The Weir Group is one of the longest-continuously-headquartered listed companies in Glasgow. Founded in 1871 by brothers George and James Weir to manufacture marine engineering products for the city's Clyde-built shipping industry, the business has remained headquartered in central Glasgow for over 150 years, currently at 1 West Regent Street.
Today the group designs and manufactures highly-engineered equipment for the mining and minerals processing industry, plus aftermarket parts and services. Weir is the global leader in slurry handling pumps used by mining operations worldwide, a market position built up through decades of patented innovation and a global service network across more than 50 countries.
Strategic Focus : After divesting its oil and gas division to Caterpillar in 2021 for $405 million, Weir became a pure-play mining technology business, positioning itself to benefit from the global minerals demand driven by the energy transition and electric vehicle production.
Why it matters : Weir Group represents the direct continuation of Glasgow's heavy-engineering heritage in a modern global business, and its FTSE 250 status keeps the city visible on the London Stock Exchange's mid-cap index.
5. STV Group - Scotland's Independent Broadcaster
Location : Pacific Quay, 120 Govan Road, Glasgow Founded : 1957 (Scottish Television) Stock Exchange : LSE: STVG (AIM)
Scottish Television began broadcasting in 1957 as the ITV franchise holder for Central Scotland, the second ITV regional broadcaster to launch after London. After several ownership changes and corporate rebrandings, the modern STV Group plc was constituted in 2006 and moved into the purpose-built Pacific Quay studios on the south bank of the Clyde in 2007.
STV operates the STV channel (Scotland's most-watched commercial broadcaster), the STV Player streaming service, and STV Studios (a top-five UK independent television production company). STV Studios produces shows for the BBC, Channel 4, Sky, and Netflix in addition to programming for the STV channel itself.
Studio Production : STV Studios has expanded aggressively through acquisitions of independent production companies across the UK, growing the production arm from a Scottish-focused operation into one of the largest indie producers in the UK by revenue.
Why it matters : STV is the only Scottish broadcaster in the UK ITV federation and Glasgow's most visible media employer, with around 700 staff at the Pacific Quay headquarters alongside the BBC Scotland building next door.
6. Edrington - The Owner of The Macallan
Location : 2500 Great Western Road, Glasgow Founded : 1850s Owner : The Robertson Trust (Scottish charity)
Edrington traces back to the 1850s when the Robertson brothers acquired several Scottish distilleries, and is today one of the largest premium spirits groups in the world. The modern Edrington Group was incorporated in 1999 and is ultimately owned by The Robertson Trust, one of Scotland's largest charitable foundations.
The company designs, distils, ages, blends, and markets premium and super-premium Scotch whisky brands including The Macallan, The Famous Grouse, Highland Park, Naked Malt, plus the Caribbean rum brand Brugal. The Macallan is the group's flagship, regarded as the global leader in luxury single malt Scotch with limited editions regularly retailing in the tens of thousands of pounds.
Charitable Ownership : Because Edrington is ultimately owned by The Robertson Trust, profits not reinvested in the business flow to Scottish charitable causes rather than to external shareholders. The Trust has distributed over £300 million in grants to good causes across Scotland since its founding.
Why it matters : Edrington combines two iconic Glasgow stories under a single corporate roof, namely premium Scotch whisky leadership and Scottish charitable philanthropy, making it one of the most distinctive ownership models on the list.
7. Tennent Caledonian Breweries - Scotland's Oldest Brewery
Location : Wellpark Brewery, 161 Duke Street, Glasgow Founded : 1740 Owner : C&C Group (Ireland)
Brewing has continuously happened at the Wellpark site in Glasgow's East End since 1556, making it the oldest continuous brewing location in Scotland. The Tennent family took over the site in 1740 and developed Tennent's Lager into Scotland's best-known beer brand. The brewery was acquired by Ireland's C&C Group, owner of Bulmers and Magners cider, in 2009.
The business brews Tennent's Lager (Scotland's best-selling lager by a wide margin), Caledonia Best (an East-of-Scotland bitter), Heverlee (a Belgian-style premium lager), and a range of other Tennent's-branded products. The Wellpark site produces well over 100 million pints a year.
Cultural Footprint : The Tennent's red T is one of the most recognisable Scottish brand marks, omnipresent across pub fronts, festival sponsorships, and football club shirts throughout the country. The brewery itself runs popular public tours through Glasgow's tourism programme.
Why it matters : Tennent Caledonian represents one of the most enduring industrial businesses in Glasgow, with 285 years of continuous Tennent-family-and-successor brewing on the same patch of Duke Street.
8. Scottish Friendly - The Glasgow Mutual
Location : Galbraith House, 16 Blythswood Square, Glasgow Founded : 1862 Status : Mutual (member-owned)
Scottish Friendly Assurance Society was founded in 1862 as a friendly society offering basic life insurance to working families. The society has stayed mutual through every wave of demutualisation that swept the UK insurance industry in the 1990s and 2000s, and remains one of the few mid-size mutuals still operating independently rather than being absorbed into a larger insurance group.
The company offers long-term savings, life insurance, ISAs, and child trust funds. All products are delivered through the mutual model where profits return to members via better policy returns rather than to external shareholders. Member-friendly products such as the Scottish Friendly Children's Bond have made the society one of the better-known mid-tier UK mutuals.
Mutual Durability : Scottish Friendly manages assets of around £4 billion on behalf of roughly 750,000 members, and has steadily grown its book through partnership distribution deals with retail brands.
Why it matters : Scottish Friendly is Glasgow's longest-continuously-running independent mutual financial institution, and a working proof that the mutual model still has commercial relevance in the modern UK financial services landscape.
9. Celtic FC - The Hoops
Location : Celtic Park, Parkhead, Glasgow Founded : 1887 League : Scottish Premiership
Celtic Football Club was founded in 1887 by Brother Walfrid in Glasgow's East End to raise funds for poor children of Catholic immigrant families in the city. The club went on to become one of the most successful in European football, and in 1967 the Lisbon Lions became the first British side to win the European Cup.
Celtic competes in the Scottish Premiership and has won over 55 league titles. The club's commercial operations make it Scotland's largest sports business, with annual revenue typically in the £80-130 million range driven by matchday income, broadcasting rights, and one of the largest replica-shirt sales operations in the European game.
Home Ground : Celtic Park (capacity around 60,400) is the largest football stadium in Scotland and one of the largest club football grounds in the UK. Known to fans simply as Paradise, the ground sits in the Parkhead district of Glasgow's East End just over a mile from the city centre.
Why it matters : Celtic FC is one of Glasgow's two most globally recognisable cultural exports, with a worldwide supporter network across the Irish diaspora and a sporting heritage that put the city on the European football map.
10. Rangers FC - The Gers
Location : Ibrox Stadium, 150 Edmiston Drive, Glasgow Founded : 1872 League : Scottish Premiership
Rangers Football Club was founded in 1872 by four teenage friends and grew to become Scotland's most successful football club by domestic trophies. The club holds the world record for top-flight league titles in a single national league (55 and counting). The modern era has included a 2012 financial collapse and reformation in the lower leagues, followed by a return to the Premiership in 2016 and resumption of trophy-winning form.
The club competes in the Scottish Premiership with annual revenue similar to Celtic in the £80-100 million range. Ibrox Stadium regularly hosts around 50,000 home fans for every Premiership match, with the matchday operation being one of the largest sports hospitality operations in Scotland.
Home Ground : Ibrox Stadium (capacity around 50,800) is one of the most architecturally distinguished football grounds in the UK. The South Stand (formally the Bill Struth Main Stand) is a category B-listed building and considered one of architect Archibald Leitch's finest surviving stadium designs.
Why it matters : Rangers FC is the other half of Glasgow's Old Firm. Together with Celtic, the two clubs dominate Scottish football, define the city's sporting identity, and broadcast Glasgow's name to football audiences worldwide.
