COSTAIN LIMITED

Active
Company number 00610201Private limited companyIncorporated 1958

Key figures

£153,539,000+18.5%
Net assets 2025
+18.5%
Average annual growth 2024–2025
050 m100 m150 m200 m20242025

† COSTAIN LIMITED filed these accounts on paper, so Companies House publishes them only as a scanned image. The figures for the years marked † were read automatically from the scan and kept only where the statements add up (for example net assets equal total equity), but a reading error is still possible — check the original accounts at Companies House.

Ratios

2025

Sector comparison

SIC 42110

Where the company stands among the 3,393 active companies whose first SIC code is 42110 (Construction of roads and motorways).

Turnover£1,013,547,000
Higher than 99% · median £19,536,000 among 148 that publish turnover
Net assets£153,539,000
Higher than 99% · median £28,205
Total assets£538,806,000
Higher than 99% · median £92,034
Cash£25,984,000
Higher than 99% · median £59,601
Employees2,656
Higher than 99% · median 1
Company age68.2 years
Older than 99% · median 6.4 years
Largest in this sector by net assets
  1. COSTAIN GROUP PLC£258.2m
  2. BAM NUTTALL LIMITED£233m
  3. COSTAIN LIMITED£153.5m
  4. F M CONWAY LIMITED£151m
  5. KIER TRANSPORTATION LIMITED£122.9m
  6. COSTAIN ENGINEERING & CONSTRUCTION LIMITED£112m
  7. RINGWAY INFRASTRUCTURE SERVICES LIMITED£79.6m
  8. FERROVIAL CONSTRUCTION HOLDINGS LIMITED£78.3m
  9. FUTURE VALLEYS PROJECT CO LIMITED£73.7m
  10. FUTURE VALLEYS HOLD CO LIMITED£73.7m

Positions are approximate. Figures come from each company's latest accounts; money and employee figures are compared only with companies that filed accounts in pounds for a period ending in the last two and a half years and are not dormant, so those groups are smaller than 3,393. The line on each bar marks the median.

Summary: COSTAIN LIMITED

What kind of company is it?

COSTAIN LIMITED is a private limited company registered with Companies House under company number 00610201. It was incorporated on 25 Aug 1958. Its status is active. The registered office is in London (EC3A). Its nature of business (SIC 2007) is construction of roads and motorways (42110), construction of bridges and tunnels (42130), construction of water projects (42910), construction of other civil engineering projects n.e.c. (42990).

How is the company doing financially?

The latest accounts in the database are for 2025 (period ending 31 Dec 2025); the company files full accounts. Turnover was £1,013,547,000. Profit for the year was £20,025,000. Net assets were £153,539,000, up 18.5% on the previous year. Cash at bank and in hand was £25,984,000. Total assets were £538,806,000 and total liabilities £375,905,000. The company had an average of 2,656 employees. Figures are available for 2 financial years (2024–2025).

How does it compare with similar companies?

Compared with 3,393 active companies whose first SIC code is 42110: By turnover it ranks higher than 99% of the 148 that publish turnover (median £19,536,000). By net assets it ranks higher than 99% of them (median £28,205). By total assets it ranks higher than 99% of them (median £92,034). By cash it ranks higher than 99% of them (median £59,601). By number of employees it ranks higher than 99% of them (median 1). It is older than 99% of them (median age 6.4 years).

Does it supply the public sector?

The company is named as a supplier in 105 public contract award notices from 51 public sector buyers since 2015. Contracts awarded to it alone have a combined published value of £1.4bn. Its most frequent buyer is National Highways (17 contracts). 30 of the awards are shared with other suppliers, typically framework agreements. It is recorded as the recipient of 25 central government grants worth £3.2m, mainly from Department for Business, Energy and Industrial Strategy.

What do public registers and reports show?

It appears on the Home Office register of licensed sponsors (Global Business Mobility: Senior or Specialist Worker, Skilled Worker). HMRC lists it as an importer of goods, mainly miscellaneous chemicals, stone, plaster and cement articles. HMRC lists it as an exporter of goods, mainly machinery, plastics, iron and steel articles. In its latest payment practices report it took an average of 25 days to pay suppliers, and 18% of invoices were not paid within agreed terms. Its gender pay gap report for 2024/25 shows median hourly pay for women 55.8% lower than for men. It has modern slavery statements on the government registry for 7 years.

Who runs and controls the company?

One person with significant control is registered. 7 of 8 registered charges are outstanding.

When are its next filings due?

The next accounts are due by 30 Sep 2027. The next confirmation statement is due by 24 Jan 2027.

Filed accounts2024–2025
2024 †2025 †
Turnover1,217,216,0001,013,547,000
Profit for the year12,750,00020,025,000
Cash at bank and in hand38,361,00025,984,000
Total assets577,500,000538,806,000
Total liabilities435,525,000375,905,000
Net assets / total equity129,577,000153,539,000
Average number of employees2,7542,656

A dash (—) means no accounts were filed for that year or the item is not in the accounts; 0 is a zero stated in the accounts. Small companies usually file only a balance sheet, so the profit and loss account is often missing.

Public contracts

105 contracts

COSTAIN LIMITED is named as a supplier in 105 public contract award notices from 51 public sector buyers since 2015. The 66 contracts awarded to it alone with a published value add up to £1.4bn. 30 awards are shared with other suppliers and not counted in that total.

Contracts per year
Main buyers51
National Highways
17 contracts · £84.8m
Highways England
12 contracts · £55.6m
DfTc - Department for Transport
9 contracts · £3.1m
National Highways Limited
5 contracts · £1.6m
Crown Commercial Service
4 contracts · £6.8m
Latest 100 contracts
  1. Major Projects QUDMNATIONAL GRID UK LIMITED · shared by 64 suppliers
  2. Major Projects Framework AMP8/9THAMES WATER UTILITIES LIMITED · £4,000,000,000 · runs until Mar 2030
  3. National Grid Substation ConstructionNATIONAL GRID UK LIMITED · shared by 13 suppliers · 3 lots
  4. Alternative Active Effluent Discharge Line Installation Works and Final Design‡Nuclear Restoration Services · £9,458,845 · runs until Jun 2028
  5. South Kensington Station Capacity Upgrade Design and BuildLondon Underground Limited · £85,000,000 · runs until Jun 2028
Show 95 more
  1. THRE0081 - Border Control Post (BCP) and Control Point (CP) Infrastructure Technical and Commercial Advisory Services (On behalf of DEFRA)‡DfTc - Department for Transport · £467,097 · runs until Dec 2026
  2. CM3842 Technical Services and Assurance FrameworkYORKSHIRE WATER SERVICES LIMITED · shared by 2 suppliers, up to £4,000,000 in total · runs until Jun 2030
  3. West Winch Housing Access Road‡Norfolk County Council · £53,852,026
  4. S30100 EV Charge Point Strategy and Delivery Plan‡National Highways Limited · £211,817 · runs until Mar 2027
  5. Strategic Transport Support ServicesBlackburn With Darwen Borough Council · £150,000 · runs until Apr 2028
  6. Infrastructure Improvement FrameworkTransport for London · shared by 3 suppliers, up to £1,400,000,000 in total · 2 lots · runs until Jun 2028
  7. S30074 Floating Bus Stops - Research, Testing and Trials‡National Highways Limited · £304,387 · runs until Oct 2027
  8. Highways Services Strategic Delivery Partner (SDP4)City of Bradford Metropolitan District Council · £2,083,333
  9. Construction Professional Services 2Government Commercial Agency · shared by 28 suppliers, up to £3,500,000,000 in total · runs until Apr 2030
  10. S30077 Road Safety Analysis and Reporting (STATS19)‡National Highways Limited · £955,000 · runs until Mar 2029
  11. North West Contractor FrameworkWirral Council · shared by 10 suppliers · 2 lots · runs until Mar 2030
  12. SGHWR - D60 Crane - Scope Development‡Nuclear Restoration Services Ltd · £49,665
  13. ID6064 Capital Investment Consultancy Services FrameworkMAG AIRPORT LIMITED · shared by 4 suppliers, up to £22,360,000 in total
  14. 100760 Landulph Tertiary ConnectionNATIONAL GRID ELECTRICITY TRANSMISSION PLC · runs until Aug 2027
  15. S30051 HPEVCP Strategy feasibility - Co-located sites‡National Highways Limited · £74,637
  16. S30037 Supervision of Construction of Energy Storage Systems Contract (Phase 3c)‡National Highways · £49,766
  17. Transport TechnologyCrown Commercial Service · shared by 106 suppliers, up to £1,858,800,000 in total · 8 lots · runs until Oct 2027
  18. Infrastructure Delivery Partnership (IDP)‡Sellafield Ltd · shared by 3 suppliers, up to £2,945,000,000 in total · runs until Oct 2040
  19. Infrastructure Delivery Partnership (IDP)‡Sellafield Limited · £1,060,000,000
  20. Reactor Buildings Height Reduction (EXECUTION phase)‡Nuclear Restoration Services Ltd · £143,626,584 · 2 lots · runs until Mar 2029
  21. Trawsfynydd Reactor Buildings Height Reduction‡Nuclear Restoration Services Limited · £71,813,292
  22. Specialist Professional and Technical Service 3 (SPaTS3)‡National Highways · £82,500,000
  23. THRE0057 - RIN WESTERN, WALES & WESSEX TEAM TECHNICAL SUPPORT‡DfTc - Department for Transport · £600,000 · runs until Apr 2027
  24. T0660 Route Strategies WP 2 - Route Strategy Programme Oversight, Engagement and Comms‡National Highways · £124,588
  25. ORT0172 - High Power Electric Vehicle Charge Point Feasibility Phase 3 Consultancy Support‡National Highways · £60,000
  26. Energy and Net Zero Professional Services Framework‡DESNZ & DSIT Group Commercial · shared by 15 suppliers, up to £500,000,000 in total · 2 lots
  27. Drainage Survey - Waterside Park DepotSwindon Borough Council · £29,847
  28. Award Notice CP7 Independent Reporter Framework‡Network Rail Infrastructure Ltd · £1,100,000
  29. HS2 Limited Tunnel and Lineside Mechanical and Electrical Systems‡HS2 · £408,545,166 · runs until Aug 2032
  30. Tunnel and Lineside Mechanical and Electrical (M&E) Systems‡High Speed Two (HS2) Ltd
  31. Energy & Net Zero Professional Services Framework‡DESNZ · shared by 43 suppliers, up to £250,000,000 in total · runs until Jan 2027
  32. PRO004736-Works-Framework-Build Only‡United Utilities Water Limited
  33. T0611 Back-up power generation for Operational Technology‡National Highways · £73,183
  34. AMP 8 Framework- Capital Strategic Delivery Partners (SDP)‡Southern Water Services Ltd. · shared by 2 suppliers, up to £1,881,833,333 in total
  35. Asset, Capital and Engineering Professional ServicesTHAMES WATER UTILITIES LIMITED
  36. T0614 Product Development and Innovation Services‡National Highways · £148,694
  37. T0594 Product Development and Innovation Services‡National Highways · £19,891
  38. T0561 MCHW validation task - COSTAIN‡National Highways · £37,002
  39. T0576 Specialist Technical Support for Supervision of Construction of Energy Storage Systems (ESS) to support EV Charging at Motorway Service Areas (MSA) - Pha…‡National Highways · £74,935
  40. Wider EcosystemNORTHUMBRIAN WATER GROUP LIMITED
  41. National Highways Benefit Management MaturityOFFICE OF RAIL AND ROAD · £59,990
  42. THRE0001 Operator of Last Resort Technical and Commercial AdvisorsDfTc - Department for Transport · shared by 7 suppliers, up to £19,500,000 in total · runs until Dec 2026
  43. THRE0006 Transpennine Route Upgrade Technical Advisors‡DfTc - Department for Transport · £800,000
  44. THRE0007 - Infrastructure Efficiency and Engineering Team Technical Advisors‡DfTc - Department for Transport · shared by 2 suppliers, up to £750,000 in total
  45. THRE0010 Review of Station and Asset Management Plans‡DfTc - Department for Transport · £365,000
  46. T0500 TOR3009 Connected and Autonomous Plant‡National Highways · £111,839
  47. Commercial Viability and Deliverability Consultancy for Kent Resilience Programme‡DfTc - Department for Transport · £150,000
  48. T0467 Product Development and Innovation Services‡National Highways · £84,963
  49. Specialist Technical and Commercial Advisory for Rail and Other Transport Systems Framework (STARThree)‡Department for Transport · shared by 17 suppliers, up to £2,325,000,000 in total · 5 lots
  50. Specialist Technical and Commercial Advisory for Rail and Other Transport Systems Framework (STARThree)‡DfTc - Department for Transport · shared by 37 suppliers, up to £600,000,000 in total
  51. T0457 Road Safety Analysis and Reporting (STATS19)‡National Highways · £999,507
  52. Options Appraisal and Feasibility Study for the Council's Operations Depot at Waterside Park‡Swindon Borough Council · £157,786
  53. DAR: Decommissioning & Asbestos Removal‡Magnox Limited · shared by 5 suppliers, up to £485,000,000 in total · runs until May 2029
  54. Decommissioning & Asbestos Removal (DAR) framework‡Nuclear Restoration Services Limited · £1
  55. T0266 Research Alliance Management‡National Highways · £407,528 · runs until Mar 2027
  56. Regional Delivery Partnership - Delivery Integration Partner Framework (RDP-DIP)National Highways · shared by 13 suppliers
  57. Provision of Infrastructure Consultancy‡Crown Commercial Service · £4,000,000
  58. T0392 Renewable Energy Generation on or near National Highways Estate - Concept‡National Highways · £91,404
  59. A303 Stonehenge (Amesbury to Berwick Down) - Delivery Assurance Partner‡Highways England · shared by 2 suppliers, up to £60,000,000 in total · runs until Dec 2029
  60. A303 Stonehenge (Amesbury to Berwick Down) - Delivery Assurance Partner‡National Highways · shared by 2 suppliers, up to £60,000,000 in total
  61. CONTRACT FOR THE PROVISION OF INDUSTRIAL HYDROGEN ACCELERATOR STREAM 2A TO THE DEPARTMENT FOR BUSINESS, ENERGY AND INDUSTRIAL STRATEGY Department for Business, Energy & Industrial Strategy · shared by 9 suppliers, up to £2,946,970 in total
  62. ORT0040 - Spares & Maintenance Assets‡NATIONAL HIGHWAYS LIMITED · £22,591
  63. T0322 Specialist Technical Support for Procurement of Energy Storage Systems (ESS) at Motorway Service Areas - Phase 2‡Highways England · £148,640
  64. T0283 RSRF‡Highways England · £227,713
  65. RM6187 Framework Schedule 6 (Order Form and Call-Off Schedules) Community Insights ReportCOMMUNITY HEALTH PARTNERSHIPS LIMITED · £36,000
  66. T0237 Resource for Regional Delivery - Lot 5, Yorkshire North East Region‡Highways England · £2,293,929
  67. T0233 Resource for Regional Delivery - Lot 1, East Region‡Highways England · £1,817,426
  68. The Analytical Capability Programme - Communicating Analysis‡Highways England · £199,988
  69. LPS CAS - Lancaster South Growth Catalyst Highway Infrastructure Early Supplier Involvement - RFQ 15301428‡Lancashire County Council · £100,000,000 · runs until Sep 2027
  70. Lancaster South Growth Catalyst Highway Infrastructure Early Supplier Involvement‡Lancashire County Council · £100,000,000
  71. Technical Third Party Support (TTPS) for the Net-Zero Innovation Portfolio (NZIP)‡Department for Business, Energy and Industrial Strategy · shared by 10 suppliers, up to £4,300,000 in total
  72. Specialist Technical Support for Procurement of Energy Storage Systems (ESS) at Motorway Service Areas‡Highways England · £85,690
  73. Procurement of Port Infrastructure Consultancy‡Crown Commercial Service · £2,000,000
  74. Construction AdviceEAST WEST RAILWAY COMPANY LIMITED · £94,899
  75. 636_21 Vehicle Charging Infrastructure 2 (VCI 2)‡ESPO · shared by 25 suppliers, up to £71,428,572 in total
  76. Half Hinge Joint‡Highways England · £89,537
  77. 664_21 Consultancy Services‡Espo · shared by 177 suppliers, up to £600,000,000 in total · 3 lots
  78. ESPO Consultancy Framework - Cared for Children Consultancy Programme (CAFS/2025/294)‡Stoke-on-Trent City Council · shared by 51 suppliers, up to £28,571,428 in total · 4 lots
  79. Blackwall Tunnel Southbound Renewals Phase 1 - Concept Design‡Transport for London · £815,000
  80. Road Works check and challenge of TTM designs and Road works deep dive improvement plan‡Highways England · £732,993
  81. Surface Transport Infrastructure Construction Framework‡Transport for London · £100,000,000
  82. Study into the prevention and elimination of Utility Strikes‡HIGHWAYS ENGLAND COMPANY LIMITED · £191,598
  83. 701392380 - DNO PMO Contract Award NoticeMinistry of Defence · £1,644,220
  84. CAA Economic Consultancy Services Framework Agreeement‡Civil Aviation Authority · £2,000,000
  85. The Provision of Port Infrastructure Consultancy‡Cabinet Office : Cabinet Office · £3,200,000
  86. SMA: M6 J21a-26‡HIGHWAYS ENGLAND COMPANY LIMITED · £131,608,023
  87. TTWO0075 -Ports, Borders, Shipping and Supply Chain Technical Advisors‡DfTc - Department for Transport · £750,000
  88. Area 4 Asset Delivery Construction Works Framework (Area 4 Interim) ContractHighways England · £50,000,000
  89. Call off Technical Advice for Direct Procurement for Customers and Future Assets (Large Infrastructure) ProjectsWater Services Regulation Authority (Ofwat) · shared by 3 suppliers, up to £540,000 in total
  90. Smart Motorways AllianceHighways England · shared by 7 suppliers, up to £4,500,000,000 in total · runs until Sep 2030
  91. Connected Digital Roads.‡HIGHWAYS ENGLAND COMPANY LIMITED · £978,393
  92. Modification Notice - Specialist Technical and Commercial Advisory Services for Rail and Other Transport Modes Framework (STAR 2 )‡Department for Transport · shared by 39 suppliers, up to £157,500,000 in total
  93. Delivery Integration Partnership (DIP)Highways England · shared by 15 suppliers, up to £8,700,000,000 in total
  94. Provision of Consultancy for Airport Capacity Programme‡Crown Commercial Service · £800,000
  95. Re-Tender - Project Management of the Bradford Council WY+TF Project Portfolio - AWARD‡West Yorkshire Combined Authority

From contract award notices on Contracts Finder (since 2016) and Find a Tender (since 2021), published by the Cabinet Office under the Open Government Licence v3.0. Values are as published by the buyer and usually cover the whole contract term; the total leaves out awards shared between several suppliers, where the published figure is a ceiling for all of them, placeholder values and single figures of £1 billion or more. Notices marked ‡ do not state a company number and were linked by an exact match on the registered name. Contracts below the publication thresholds and those of devolved buyers that publish elsewhere are not included.

Government grants

25 grants

COSTAIN LIMITED is recorded as the recipient of 25 central government grants since 2018, together worth £3.2m.

Funders
Department for Business, Energy and Industrial Strategy
16 grants · £2.9m
Department for Science, Innovation and Technology
6 grants · £222.7k
Department for Transport
1 grant · £64.9k
Department for Education
2 grants · £12.3k
Grants
  1. Boreham to hatfield WCHRDepartment for Transport · £64,925 · A12 J19-21 Boreham to Hatfield Peveral WCHR
  2. Dromos CAM system to link Bolton Transport Interchange to the Royal Bolton HospitalDepartment for Science, Innovation and Technology · £5,800 · UKRI - Innovate UK - Scheme
  3. Proactive Intelligent Construction Site Management Enabled by Automated On Site Monitoring (PRISM)Department for Science, Innovation and Technology · £3,577 · UKRI - Innovate UK - Scheme
  4. TRACD - Transforming Rail Construction using Data: Digital frameworks for material efficiency and reducing carbon emissionsDepartment for Science, Innovation and Technology · £3,341 · UKRI - Innovate UK - Scheme
  5. Milton Keynes AVRTDepartment for Science, Innovation and Technology · £23,757 · UKRI - Innovate UK - Scheme
Show 20 more
  1. Cambridge Autonomous Rapid TransportDepartment for Science, Innovation and Technology · £16,537 · UKRI - Innovate UK - Scheme
  2. A-TRIS (Automated Tunnel Robotic Installation System)Department for Business, Energy and Industrial Strategy · £78,094 · UKRI - Innovate UK - Scheme 22/23
  3. UK Central CAV Testbed (Midlands Future Mobility)Department for Business, Energy and Industrial Strategy · −£69 · UKRI - Innovate UK - Scheme 22/23
  4. Midlands Future Mobility: Rural and InterurbanDepartment for Business, Energy and Industrial Strategy · −£79 · UKRI - Innovate UK - Scheme 22/23
  5. A-TRIS (Automated Tunnel Robotic Installation System)Department for Science, Innovation and Technology · £169,691 · UKRI - Innovate UK - Scheme
  6. UK Electric Road SystemDepartment for Business, Energy and Industrial Strategy · £297,541 · UKRI - Innovate - Scheme 21/22
  7. South Wales Industry - A Plan for Clean GrowthDepartment for Business, Energy and Industrial Strategy · £23,431 · ALB - UKRI - Innovate UK grant awards in 20-21
  8. Scotland's Net Zero Roadmap (SNZR)Department for Business, Energy and Industrial Strategy · £24,944 · ALB - UKRI - Innovate UK grant awards in 20-21
  9. IntelliSite: enabling safer and more efficient construction through video analytics and machine learningDepartment for Business, Energy and Industrial Strategy · £210,580 · ALB - UKRI - Innovate UK grant awards in 20-21
  10. AI System for Predicting Embodied Carbon (ASPEC) in Infrastructure ProjectsDepartment for Business, Energy and Industrial Strategy · £51,260 · ALB - UKRI - Innovate UK grant awards in 20-21
  11. Hy-Value : Waste Biogas to Hydrogen for Road TransportDepartment for Business, Energy and Industrial Strategy · £59,397 · ALB - UKRI - Innovate UK grant awards in 20-21
  12. Hydrogen Decentralised Energy Utilisation and Storage (HYDERUS )Department for Business, Energy and Industrial Strategy · £58,926 · ALB - UKRI - Innovate UK grant awards in 20-21
  13. Transport Infrastructure Efficiency Strategy Living labsDepartment for Business, Energy and Industrial Strategy · £1,399,949 · ALB - UKRI - Innovate UK grant awards in 20-21
  14. Scotland's Net Zero Infrastructure (SNZI)Department for Business, Energy and Industrial Strategy · £14,989 · ALB - UKRI - Innovate UK grant awards in 20-21
  15. Scotland's Net Zero Roadmap (SNZR)Department for Business, Energy and Industrial Strategy · £6,965 · ALB - UKRI - Innovate UK grant awards in 20-21
  16. Apprenticeships Participation 16 - 18Department for Education · £6,000
  17. Apprenticeships Participation 18+Department for Education · £6,250
  18. ALB - UKRI - IoT-enabled Platform for Rail Assets Monitoring and Predictive Maintenance (i-RAMP)Department for Business, Energy and Industrial Strategy · £324,305 · ALB - Innovate UK - Innovation grants 18-19
  19. ALB - UKRI - Real-time Emission Visualization (REVIS) for Eco-friendly Travel BehavioursDepartment for Business, Energy and Industrial Strategy · £322,638 · ALB - Innovate UK - Innovation grants 18-19
  20. ALB - UKRI - Optimising equipment use in construction with BIM, IoT and data analyticsDepartment for Business, Energy and Industrial Strategy · £31,200 · ALB - Innovate UK - Innovation grants 18-19

From the Government Grants Register published by the Cabinet Office (financial years 2016/17 onwards, Open Government Licence v3.0). It covers grants from central government departments and their agencies where the register states the recipient's company number and the recipient name matches this company; grants from local authorities, lottery distributors and devolved governments are not included.

Statutory reporting

Payment practices1 Jan 2026 – 30 Jun 2026
Average time taken to pay invoices
25 days
Invoices not paid within agreed terms
18%
  • Within 30 days 78%
  • 31 to 60 days 19%
  • After 60 days 3%
Earlier periods (7)
Period ending
Days to pay
Within 30 days
Late
31 Dec 2025
20
84%
15%
30 Jun 2025
22
82%
12%
31 Dec 2024
31
88%
14%
30 Jun 2024
20
85%
13%
31 Dec 2023
19
88%
10%
30 Jun 2023
18
89%
9%
31 Dec 2022
19
88%
9%

View the latest report on GOV.UK

Gender pay gap2024/25
Median hourly pay
women 55.8% lower
Mean hourly pay
women 41% lower
Median bonus pay
women 100% lower
Employer size
250 to 499 employees
Lower pay quarter16.4% womenLower middle7.6% womenUpper middle1.5% womenUpper pay quarter1.5% women
Earlier years (7)
Year
Median hourly pay
Mean hourly pay
2023/24
women 40.1% lower
women 27.5% lower
2022/23
women 30.4% lower
women 6.7% lower
2021/22
women 24.5% lower
women 11.1% lower
2020/21
women 9.2% lower
women 11.2% lower
2019/20
women 13.9% lower
women 5.9% lower
2018/19
women 14.5% lower
women 9.6% lower
2017/18
women 12.1% lower
women 10% lower

A positive gap means women's average hourly pay is lower than men's across the whole employer; it is not a comparison of pay for the same work. View on the Gender pay gap service

Modern slavery statements7
2026
Statement · summary on GOV.UK · group statement (COSTAIN GROUP PLC)
2025
Statement · summary on GOV.UK · group statement (COSTAIN GROUP PLC)
2024
Statement · summary on GOV.UK · group statement (COSTAIN GROUP PLC)
Earlier years (4)
2023
Statement · summary on GOV.UK · group statement (COSTAIN GROUP PLC)
2022
Statement · summary on GOV.UK · group statement (COSTAIN GROUP PLC)
2021
Statement · summary on GOV.UK · group statement (COSTAIN GROUP PLC)
2020
Statement · summary on GOV.UK · group statement (COSTAIN OIL, GAS & PROCESS LIMITED)

Figures the company reported itself to the government's Check payment practices service, Gender pay gap service and Modern slavery statement registry (Open Government Licence v3.0). Only large companies and employers with 250 or more staff have to report, so most companies have nothing here.

Registers and licences

Sponsor licence‡
Licence type and rating
Worker (A rating)
Routes
Global Business Mobility: Senior or Specialist Worker, Skilled Worker

On the Home Office register of licensed sponsors, which lists organisations licensed to sponsor workers from overseas.

International trade‡

Listed by HMRC as an importer of goods in 2 of the last 12 months on record, most recently July 2026. Main goods: miscellaneous chemicals and stone, plaster and cement articles.

Listed by HMRC as an exporter of goods in 3 of the last 12 months on record, most recently April 2026. Main goods: machinery, plastics and iron and steel articles.

From HMRC's monthly lists of importers and exporters. Traders can ask to be left off the lists, so absence does not mean a company does not trade.

Sources: Charity Commission for England and Wales, Care Quality Commission, Home Office and HM Revenue & Customs, under the Open Government Licence v3.0. Entries marked ‡ come from lists that do not state a company number and were linked by an exact match on the registered name.

History

4 events
  1. Financial year 2025 endedAccounts: turnover £1bn, net assets £153.5m, 2,656 employees
  2. Financial year 2024 endedAccounts: turnover £1.2bn, net assets £129.6m, 2,754 employees
  3. Costain Civil Engineering Limited registered as a person with significant control
  4. Company incorporatedPrivate limited company

Dates as recorded at Companies House: incorporation, name changes, officer appointments and resignations, current persons with significant control, and the end of each financial year with figures in the database. Former persons with significant control are not listed.