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WC

William Cook Rail Limited

Sheffield
Large

William Cook Rail Limited designs and manufactures safety-critical bogie and car body components for trains and metros, including complex steel castings. They also provide bogie overhaul services.

william-cook.co.uk ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£16.8m
Live
1
Buyers
1
12m
£567k
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts1 / 9
  • Top buyers1
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — William Cook Rail LimitedUpdated 06 Jul 2026

At a glance · for buyers and watchdogs

William Cook Rail Limited has won £16.8m across 1 public-sector buyer, with 1 live contract. No active Companies House risk flags.

Why: top buyer Transport for London at 100% · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
1 of 9Live contracts
100%Top-buyer concentration
—Category exposure
0Contract modifications
If you're a buyer:CapabilitiesReferencesKPIComplianceWatchdog?FlagsModificationsConcentrationNews

Social value

Commitments mapped to the Government Social Value Model themes.

⚑ Self-reported
—

No social-value commitments yet

Jobs, skills, environmental, inequality and community commitments appear here once a claimed supplier attributes them to awarded contracts, or once we detect them on the supplier’s website.

ESG & policies vault · 0/5

Key governance & sustainability policies. Published documents link out; missing ones are greyed.

↔ Cross-checked
Net-zero planNot provided✓
Modern slavery statementNot provided✓
EDI policyNot provided✓
Anti-briberyNot provided✓
Data protectionNot provided✓

Capabilities

What this supplier does, where they sit, who they sell to.

◐ From website & notices
Services · 2
Bogie components for trains and metrosDesign and manufacture of safety-critical bogie and car body components, including complex steel castings. ↗Bogie and coupler overhaulOverhaul services for bogies used in trains and metros. ↗

Extracted automatically from william-cook.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

Case studies · 2

Delivery stories from the supplier’s website. Clients are not yet cross-checked against award records.

◐ From supplier website
Bolster and half-frame for Alstom Citadis SpiritSteel castings per bogie supplied machined, x-rayed, pressure tested and painted. 450 bogie frames for Ottawa and Toronto metros.
Bogie frame for Bombardier Electrostar8 steel castings per bogie supplied machined and fabricated into a single assembly. 5,500 bogie frames for Electrostar and Turbostar trains in the UK and South Africa.

Extracted automatically from william-cook.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

Buyer references

Named public-sector contacts who have agreed to act as a reference.

✓ Confirmed by buyer
—

No buyer references yet

Public-sector buyers can confirm they'll act as a reference for this supplier. Confirmed references — with the contract they relate to — show here.

Accreditations & memberships · 5

Credentials listed on the supplier’s website. Not yet checked against issuer registers.

◐ From supplier website
Core credentials · 0/6
Cyber EssentialsNot evidenced✓
Cyber Essentials PlusNot evidenced✓
ISO 27001 — Information securityNot evidenced✓
ISO 9001 — QualityNot evidenced✓
ISO 14001 — EnvironmentalNot evidenced✓
ISO 45001 — Health & safetyNot evidenced✓
Other credentials & memberships · 5
IRISCertification
RISASCertification
RISQSCertification
Deutsche BahnCertification
EN15085Standard

Extracted automatically from william-cook.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

KPI performance

Delivery, budget and satisfaction scores reported quarterly by buyers.

✓ Verified
84

No verified KPI scores yet

Once buyers report contract KPIs — delivery on time, on budget, satisfaction, adoption and accessibility — a weighted grade and breakdown appear here.

Contracts · 1 live · 8 historic

Pulled from Contracts Finder & Find a Tender. Most recent first.

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Supply of Drawgears for Engineering Vehicles
Transport for London—11 Aug 2025£567k12 mopending
96TS - Jubilee Line Couplers Overhaul
Transport for London3463120022 Mar 2023£9.4m2.4 yrsClosed
The Repair/Overhaul of Piccadilly Line Brake Head Assembly
Transport for London3463100015 Jul 2019£382k4 yrsClosed
Framework agreement for the supply of Wagon Drawgears
Transport for London3460000025 Mar 2019£1.1m3 yrsClosed
Supply of Battery Loco Drawgears
Transport for London3460000025 Mar 2019£478k2 yrsClosed
TfL 00909 Supply of Aluminium Headstock for the London Underground Piccadilly Line 73ST
Transport for London3462000005 Nov 2017£2.2m3 yrsClosed
The supply of Machined Aluminium Headstock Bars
Transport for London3462000025 Jan 2018£2.2m3 yrsClosed
Bogie Framework Repairs and Overhaul for Engineering Vehicles
Transport for London————Live
Supply of Drawgears for Engineering Vehicles
Transport for London—08 Aug 2025£567k12 mopending
Total live value — · mean award £1.9m

Top buyers · 1 buyers · top 3 = 100%

Share of awarded value. Concentration fires above 40% for any single buyer.

✓ From notices
1
Transport for London
9 contracts
100%
since 2018

Geography

Distribution of awarded value by buyer region.

✓ From notices
UK · schematic only
London9 contracts
100%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). William Cook Rail Limited highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
SM
SIEMENS MOBILITY LIMITED
No£368.9m4
SM
Siemens Mobility Costain JV
No£328.2m2
HR
Hitachi Rail GTS UK Limited and Telent Technology Services Limited Joint Venture
No£80.5m3
EX
EXTERNITURE LIMITED
No£8.0m2
PF
PELL FRISCHMANN CONSULTANTS LIMITED
No£2.5m1
WC
William Cook Rail Limited
No£567k—
Compare peers →

Red flags · 0 active

Automated scan of Companies House status, charges and insolvency records.

✓ Verified
✓ Clean. No active risk signals from Companies House status, charges or insolvency records.

Compliance scorecard

Derived from Companies House filings — not a full supplier-assurance check.

↔ Cross-checked
Trading status
Active
Live at Companies House
Annual accounts
Up to date
Last made up to 28 Jun 2025
Confirmation statement
Up to date
Next due 01 Oct 2026
Outstanding charges
0
No charges registered
Insolvency history
None
No insolvency cases registered
Certifications (ISO, Cyber Essentials, Living Wage, B-Corp, modern-slavery) are supplier self-reported and appear once a claimed profile adds them.

Modifications

Variations to awarded contracts logged under Procurement Act 2023 s.74.

✓ From notices
±

No modifications recorded

No published contract variations for this supplier. Modification notices appear here as they are issued under the Procurement Act 2023.

News mentions

UK trade press & nationals, matched to this supplier.

◰

No news mentions found

We haven't matched any recent UK press coverage to this supplier. Mentions appear here automatically as they're published.

Companies House

Live sync — registered details, directors, PSC and SIC codes.

✓ Live sync

Registered details

Company no.
08694277
Status
Active
Type
Private limited
Incorporated
17 Sept 2013
Reg. office
William Cook Rail Limited, Parkway Avenue, Sheffield, S9 4UL
SIC codes
24520 · 28990
Last accounts
28 Jun 2025
Next accounts due
29 Mar 2027

Directors & PSC

  • ROSS, Philip John — secretary
    Appointed 26 Jul 2024
  • ROSS, Philip John — director
    Appointed 24 Apr 2024
  • SEYMOUR, Christopher David — director
    Appointed 15 Jul 2016
  • William Cook Holdings Limited — person with significant control
    ownership of shares 75 to 100 percent · voting rights 75 to 100 percent · right to appoint and remove directors · significant influence or control

Financial

Filed accounts from Companies House.

↔ From Cos House
£

No financial filings on record

Turnover, profit and headcount appear here once audited or micro-entity accounts are filed at Companies House.

Org tree

Group structure and ownership.

↔ From Cos House
WILLIAM COOK RAIL LIMITED
08694277 · this company

Independent. No parent company or subsidiaries recorded at Companies House for this entity.