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AS

Assix Ltd

Construction work · Sheffield
SME

Assix Ltd is a principal contractor and construction manager that delivers construction projects across the UK, specializing in new builds and refurbishments in various sectors including education, commercial, retail, residential, and transport.

assix.co.uk ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£25.3m
Live
4
Buyers
6
12m
£1.2m
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities6
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts4 / 40
  • Top buyers6
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — Assix LtdUpdated 20 Jul 2026

At a glance · for buyers and watchdogs

Assix Ltd has won £25.3m across 6 public-sector buyers, with 4 live contracts. No active Companies House risk flags.

Why: top buyer UNIVERSITY OF SHEFFIELD at 53% · 100% in Construction work · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
4 of 40Live contracts
53%Top-buyer concentration
100%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
Sectors served · 1/8
Central government✓
Local government✓
NHS & health✓
Housing✓
Utilities & energy✓
Financial services✓
Education✓
Defence✓
Services · 6
Principal ContractorAssix delivers construction projects for clients across the UK.
Construction ManagerAssix manages construction projects, ensuring successful delivery.
New BuildAssix specializes in new construction projects.
RefurbishmentAssix undertakes refurbishment projects across various sectors.
Design & BuildAssix offers design and build services for construction projects.
TraditionalAssix provides traditional construction services.
Frameworks & DPS · 6 from notices
  • Geography Building - Facade ReplacementUNIVERSITY OF SHEFFIELD · £2.3m
  • 4850.EFM.SW.25 - Solly Street Interior Fit Out and RefurbishmentUNIVERSITY OF SHEFFIELD · £1.2m
  • 2628/JR Hadfield CBE Re-Roofing and Associated WorksUNIVERSITY OF SHEFFIELD · £837k
  • 3344.EFM.SW.22 Remedial Works to Former Henderson's Relish FactoryUNIVERSITY OF SHEFFIELD · £835k
  • 2986/SW Bartolome Roof Railings ReplacementUNIVERSITY OF SHEFFIELD · £624k
  • 3974.EFM.JR.23 - 36-38 Victoria Street and University Health Centre RefurbishmentUNIVERSITY OF SHEFFIELD · £618k

Extracted automatically from assix.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
Victoria Street / Health CentreAssix was appointed as Principal Contractor for a two-phased listed building refurbishment project. ↗DICe BuildingAssix was appointed as Principal Contractor for the refurbishment of levels 0 - 4 of the DICe Building. ↗

Extracted automatically from assix.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

Independently issued. Verification dates cross-checked against issuer registers.

↔ Cross-checked
—

No accreditations recorded

B-Corp, ISO, Cyber Essentials, Living Wage and similar credentials appear here once added by a claimed supplier and cross-checked against the issuing register.

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 · 4 live · 36 historic

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

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
4850.EFM.SW.25 - Solly Street Interior Fit Out and Refurbishment
UNIVERSITY OF SHEFFIELD4530000001 Dec 2025£1.2m3 moClosed
Building Refurbishment Works & Services
NEUPC Ltd4545310029 Aug 2025£4.8m5.8 yrsLive
Chaucer Windows Phase 3
Nottingham Trent University4500000022 Mar 2025£1.6m—Closed
4287.EFM.JR.24 Arts Tower Steps and Ramp Refurbishment
UNIVERSITY OF SHEFFIELD4545310011 Nov 2024£585k3 moClosed
Maudslay RAAC Refurbishment Works
Nottingham Trent University4545310018 Jan 2025£445k—Closed
4356.EFM.JR.24 - 9 Mappin Refurbishment Scheme
UNIVERSITY OF SHEFFIELD4530000020 Jan 2025£251k2 moClosed
DICE GF Refurbishment Construction Package
Nottingham Trent University4500000006 Jun 2024£563k—Closed
Small Contractors Framework
Nottingham Trent University4500000009 Jan 2024£2.7m—Closed
4079.EFM.JR.24 - University Arms External Envelope Works
UNIVERSITY OF SHEFFIELD4526000016 Apr 2024£332k2 moClosed
3974.EFM.JR.23 - 36-38 Victoria Street and University Health Centre Refurbishment
UNIVERSITY OF SHEFFIELD4422122025 Mar 2024£618k6 moClosed
Total live value £4.8m · mean award £632k1–10 of 40

Top buyers · 6 buyers · top 3 = 93%

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

✓ From notices
1
UNIVERSITY OF SHEFFIELD
29 contracts
53%
since 2019
2
Nottingham Trent University
5 contracts
21%
since 2024
3
NEUPC Ltd
2 contracts
19%
since 2025
4
Science Museum Group
2 contracts
5%
since 2022
5
The Police and Crime Commissioner for Derbyshire
1 contract
2%
since 2020
6
Chesterfield Borough Council
1 contract
0%

Category mix

CPV-division share of last-12m awarded value. Single-category exposure: 100%.

✓ From notices
Construction work45
100%
⚠ Concentration: 100% of recent awarded value sits in a single CPV division. A category-specific downturn would materially affect revenue.

Geography

Distribution of awarded value by buyer region.

✓ From notices
UK · schematic only
Yorkshire32 contracts
72%
East Midlands6 contracts
23%
London2 contracts
5%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). Assix Ltd highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
JS
John Sisk and Son Ltd
No£67.8m1
KC
Kier Construction
Yes£35.4m2
WD
Willmott Dixon Construction Limited
No£28.1m2
CC
Clegg Construction Limited
No£18.8m2
MS
Morgan Sindall Construction and Infrastructure
No£12.5m1
AS
Assix Ltd
Yes£1.2m—
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 30 Jun 2025
Confirmation statement
Up to date
Next due 16 Dec 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.
10512350
Status
Active
Type
Private limited
Incorporated
06 Dec 2016
Reg. office
F6 & F7 Epic House F6 & F7 Epic House, 18 Darnall Road, Sheffield, S9 5AA
SIC codes
41201
Last accounts
30 Jun 2025
Next accounts due
31 Mar 2027

Directors & PSC

  • ASHCROFT, Paul James — secretary
    Appointed 06 Dec 2016
  • ASHCROFT, Paul James — director
    Appointed 06 Dec 2016
  • BURTON, Andrew Robert — director
    Appointed 06 Dec 2016
  • JOHNSON, Leon — director
    Appointed 06 Dec 2016
  • Mr Paul James Ashcroft — person with significant control
    ownership of shares 25 to 50 percent · voting rights 25 to 50 percent
  • Mr Andrew Robert Burton — person with significant control
    ownership of shares 25 to 50 percent · voting rights 25 to 50 percent
  • Mr Leon Johnson — person with significant control
    ownership of shares 25 to 50 percent · voting rights 25 to 50 percent

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
ASSIX LIMITED
10512350 · this company

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