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CL

UK PUBLIC-SECTOR SUPPLIER

Companies House 00610201 · United Kingdom

Costain Limited

Costain Limited is a supplier to UK public-sector buyers. This profile aggregates its public-record contract wins — who it sells to, what it supplies, latest awards and activity over time.

Data period: 2017-07-13 to 2026-09-02Updated 2026-09-02

53

Contracts won

28

Public buyers

6

Categories

2017

Active since

According to ENKII, Costain Limited has won 53 UK public-sector contracts from 28 public buyers across 6 procurement categories between 2017-07-13 and 2026-09-02, most recently working with Sellafield Limited.

Public-sector buyers

Who Costain Limited supplies

The UK public bodies Costain Limited has won the most contracts from.

BuyerContracts won
Sellafield Limited1
HS21
National Highways2
Lancashire County Council1
Lancashire County Council1
Nuclear Restoration Services Limited1
Nuclear Restoration Services Ltd2
HIGHWAYS ENGLAND COMPANY LIMITED1
Swindon Borough Council2
EAST WEST RAILWAY COMPANY LIMITED1

What they supply

Costain Limited's public-sector categories

Common Procurement Vocabulary (CPV) breakdown of contracts won over the reporting period.

Research and development services and related consultancy services

73
19 contracts won

Architectural, construction, engineering and inspection services

71
14 contracts won

Construction work

45
13 contracts won

Business services: law, marketing, consulting, recruitment, printing and security

79
2 contracts won

IT services: consulting, software development, Internet and support

72
2 contracts won

Electrical machinery, apparatus, equipment and consumables; lighting

31
1 contract won

Recent contracts

Latest contracts won by Costain Limited

The most recently published award notices on Find a Tender and Contracts Finder.

West Winch Housing Access Road

Norfolk County Council · 2026-07-13

Infrastructure Improvement Framework

Framework / DPS

Transport for London · 2026-04-21

Framework value not attributable

S30074 Floating Bus Stops - Research, Testing and Trials

Framework / DPS

National Highways Limited · 2026-04-20

Framework value not attributable

Highways Services Strategic Delivery Partner (SDP4)

City of Bradford Metropolitan District Council · 2026-04-16

SGHWR - D60 Crane - Scope Development

Framework / DPS

Nuclear Restoration Services Ltd · 2026-02-09

Framework value not attributable

Project Services - South

Framework / DPS

MAG AIRPORT LIMITED · 2026-01-30

Framework value not attributable

100760 Landulph Tertiary Connection

National Grid Electricity Transmission PLC · 2026-01-29

S30051 HPEVCP Strategy feasibility - Co-located sites

Framework / DPS

National Highways Limited · 2025-12-22

Framework value not attributable

S30037 Supervision of Construction of Energy Storage Systems Contract (Phase 3c)

Framework / DPS

National Highways · 2025-10-21

Framework value not attributable

Infrastructure Delivery Partnership (IDP)

Sellafield Limited · 2025-10-09

£1.1bn

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Activity over time

Costain Limited's public-sector activity by year

Contracts won per year, by published award date.

YearContracts won
20171
20181
20191
20202
20217
202210
20236
20246
202512
20267

Frequently asked

Common questions about Costain Limited

How many public-sector contracts has Costain Limited won?

Costain Limited has won 53 contracts from 28 UK public-sector buyers between 2017-07-13 and 2026-09-02, across 6 procurement categories.

Which public bodies does Costain Limited supply?

Costain Limited's largest public-sector buyers by award value are Sellafield Limited, HS2, National Highways. It has worked with 28 public buyers in total.

What does Costain Limited supply to the public sector?

Costain Limited's public-sector work is concentrated in research and development services and related consultancy services, architectural, construction, engineering and inspection services, construction work. See the full CPV category breakdown below.

Is Costain Limited a competitor for contracts my business wants?

If you bid for similar work, Costain Limited may be an incumbent you're competing against. ENKII scores your business against live tenders, shows the incumbents on each one, and identifies the certifications you need to compete. Free Readiness Score in 3 minutes.

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Related ENKII resources

Sources & methodology

How this profile is compiled

Analysed by ENKII · Updated 2026-09-02

This profile aggregates public-record award data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and resolves supplier identities (this profile is matched at high confidence); we don't edit the underlying facts.

Source portals

  • · Find a Tender (find-tender.service.gov.uk)
  • · Contracts Finder
Full methodology — calculations, refresh cadence & caveats

This profile reproduces public-record award data published by UK government buyers; ENKII aggregates but does not alter the underlying facts. Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.

Spotted an error, or want this profile corrected or removed? Contact hello@enkii.io and we'll review it promptly.

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