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S&

S.I.Sealy & Associates Ltd

Architecture & engineering · Stockport
SME

S.I.Sealy & Associates Ltd is a specialist building services design consultancy focused on decarbonisation and modern building services engineering. They provide digital engineering design services and complex building and energy modelling across various sectors.

sisealy.co.uk ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£495.9m
Live
19
Buyers
19
12m
£429.4m
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities5
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts19 / 30
  • Top buyers19
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — S.I.Sealy & Associates LtdUpdated 06 Jul 2026

At a glance · for buyers and watchdogs

S.I.Sealy & Associates Ltd has won £495.9m across 19 public-sector buyers, with 19 live contracts. No active Companies House risk flags.

Why: top buyer Regenda Limited (M&Y) at 86% · 100% in Architecture & engineering · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
19 of 30Live contracts
86%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 · 5
Building Services Engineering DesignExpertise in all aspects of modern building services. ↗Digital Engineering DesignUtilising MagiCAD to undertake calculations in Revit. ↗Building & Energy ModellingAdvising on all aspects of building and energy modelling. ↗3D Modelling and SurveysUtilising 3D modelling, dynamic solutions, and data management. ↗Modern Methods of ConstructionExpertise in delivering category 1 MMC buildings. ↗
Frameworks & DPS · 5 from notices
  • Innovation Chain North Framework (Also known as "ICN")Great Places Housing Group Limited · £14.6m
  • Framework for the Provision of Sustainable Estates SolutionsNHS Commercial Solutions · £13.9m
  • TC618 - NORTH WEST CONSTRUCTION HUB - CONSULTANCY FRAMEWORK (2024 TO 2028)Manchester City Council · £1.4m
  • EN:Procure Consultancy FrameworkEN Procure Ltd · £149k
  • Professional Services FrameworkBBC (British Broadcasting Corporation) · —

Extracted automatically from sisealy.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
The Royal Oldham Hospital Capital Development ProjectA £23 million new build four-storey building comprising 7400 m2, including rooftop plant and two new 24-bed ward accommodations. ↗#Destinationbootle, MerseysideA £33 million development aimed at revitalizing Bootle with affordable housing and community facilities. ↗

Extracted automatically from sisealy.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 · 19 live · 11 historic

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

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Regenda Ltd Framework Award - Works and Services Framework (04/03/26)
Regenda Limited (M&Y)—17 Mar 2026£428.0m4 yrspending
Fusion21 Construction Consultancy Services Framework
Fusion21 Members Consortium7100000022 Sept 2025£1.4m4 yrsLive
TC618 - NORTH WEST CONSTRUCTION HUB - CONSULTANCY FRAMEWORK (2024 TO 2028)
Manchester City Council7000000015 Dec 2024£1.4m3 yrsLive
Framework for the Provision of Sustainable Estates Solutions
NHS Commercial Solutions9070000001 Sept 2024£13.9m2 yrsLive
Innovation Chain North Framework (Also known as "ICN")
Great Places Housing Group Limited4521100004 Jul 2024£14.6m4 yrsLive
National Framework for Professional Services in Construction and Premises 2024 - AWARD
Pagabo7100000012 Apr 2024—4 yrsLive
Provision of Technical Support Services
Procurement for Housing7135630031 Mar 2023£5.2m4 yrsLive
Safe Regeneration Framework acting by its agent Rise Construction Framework Ltd
Safe Regeneration Ltd4500000025 Mar 2022£30.6m4 yrsClosed
EN:Procure Consultancy Framework
EN Procure Ltd7100000003 Aug 2020£149k4 yrsClosed
Your Housing Group - Professional Services Framework
Your Housing Group7131520029 Jul 2020£302k4 yrsClosed
Total live value £36.5m · mean award £16.5m1–10 of 30

Top buyers · 19 buyers · top 3 = 95%

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

✓ From notices
1
Regenda Limited (M&Y)
2 contracts
86%
since 2026
2
Safe Regeneration Ltd
3 contracts
6%
since 2018
3
Great Places Housing Group Limited
2 contracts
3%
since 2024
4
NHS Commercial Solutions
1 contract
3%
since 2024
5
Procurement for Housing
2 contracts
1%
since 2023
6
Fusion21 Members Consortium
7 contracts
0%
since 2025
7
Manchester City Council
1 contract
0%
since 2025
8
Your Housing Group
1 contract
0%
since 2020
9
FUSION 21 LIMITED
1 contract
0%
since 2017
10
EN Procure Ltd
1 contract
0%
since 2020

Category mix

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

✓ From notices
Architecture & engineering71
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
North West21 contracts
97%
South East2 contracts
3%
Yorkshire3 contracts
0%
London1 contract
0%
North East1 contract
0%
West Midlands1 contract
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). S.I.Sealy & Associates Ltd highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
S&
S.I.Sealy & Associates Ltd
Yes£429.4m—
JS
John Sisk and Son Ltd
No£67.8m1
PA
PURCELL ARCHITECTURE LIMITED
No£22.4m2
RE
Redesmere Limited
Yes£5.8m1
AE
AECOM LIMITED
No£2.7m9
D&
DREES & SOMMER UK LIMITED
Yes£2.7m3
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 31 Mar 2025
Confirmation statement
Up to date
Next due 03 Jan 2027
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.
02588550
Status
Active
Type
Private limited
Incorporated
05 Mar 1991
Reg. office
Inwood Court Stuart Road, Bredbury, Stockport, Cheshire, SK6 2SR
SIC codes
71111
Last accounts
31 Mar 2025
Next accounts due
31 Dec 2026

Directors & PSC

  • MADDEN, Sarah Louise — secretary
    Appointed 01 Sept 2019
  • MADDEN, Daniel Martin — director
    Appointed 01 Apr 2016
  • S I Sealy 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

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
S.I. SEALY & ASSOCIATES LIMITED
02588550 · this company

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