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Donald Insall Associates

Architecture & engineering · London
SME

Donald Insall Associates is a firm of conservation architects and heritage consultants that specializes in the historic environment. They work on a variety of projects, including residential, commercial, and public heritage sites, focusing on balancing tradition with contemporary needs.

donaldinsallassociates.co.uk ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£6.2m
Live
18
Buyers
37
12m
£1.6m
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities5
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts18 / 50
  • Top buyers37
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — Donald Insall AssociatesUpdated 06 Jul 2026

At a glance · for buyers and watchdogs

Donald Insall Associates has won £6.2m across 37 public-sector buyers, with 18 live contracts. No active Companies House risk flags.

Why: top buyer Fusion21 Members Consortium at 23% · 100% in Architecture & engineering · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
18 of 50Live contracts
23%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
Services · 4
Conservation architectureWe conserve buildings not by preserving them, but by helping them evolve. ↗Heritage consultancyNew design in heritage settingsTownscape advice
Frameworks & DPS · 5 from notices
  • Conservation Architect, Principal Designer for Rochdale Town Hall HLF projectRochdale Metropolitan Borough Council · £1.1m
  • The Provision of Heritage Consultancy, Conservation Engineering and Conservation Architecture Services For York City WallsCity of York Council · £500k
  • Architectural Design Services FrameworkBath and North East Somerset Council · £150k
  • Conservation Area boundary review for Local Plan and Character AppraisalLiverpool City Council · £96k
  • Development Appraisal and Design: Creative Industries Workspace, Kasbah GrimsbyNorth East Lincolnshire Council · £70k

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

Case studies · 4

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

◐ From supplier website
Private House, StaffordshireExtending a Medieval home by transforming a Grade II*-listed former Benedictine nunnery into a modern living space. ↗John Rylands LibraryTransforming a much-loved Manchester landmark. ↗The Camellia House, Wentworth WoodhouseFrom a roofless ruin to a community asset. ↗Chester Cathedral, West End ReorderingA new welcome for visitors. ↗

Extracted automatically from donaldinsallassociates.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 · 1

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 · 1
B Corp CertificationCertification ↗

Extracted automatically from donaldinsallassociates.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 · 18 live · 32 historic

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

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Contract Award
Tamworth Borough Council7100000011 May 2026£98k1.9 yrsLive
Bramall Hall MEND5 M&E Replacement - Architect
Stockport Metropoliton Borough Council7100000017 Nov 2025£45k2.9 yrsLive
Fusion21 Construction Consultancy Services Framework
Fusion21 Members Consortium7100000022 Sept 2025£1.4m4 yrsLive
Professional Services to Develop an Area Appraisal and Management Plan
Burnley Borough Council—16 Jun 2025£15k2 moClosed
ISM MM Conservation Architect for the Early Works (PBIF) and Enabling Works (MHCLG)
National Museums Liverpool7122100001 Apr 2025£271k7 moClosed
Conservation Area boundary review for Local Plan and Character Appraisal
Liverpool City Council9071200031 Mar 2025£96k16 moLive
Bramall Hall - MEND Roofing Works
Stockport Metropoliton Borough Council7100000025 Dec 2024£46k17 moClosed
Procurement of Consultancy to deliver Conservation Area Appraisals and Management Plans for 2 conservation areas - City Centre and Kelham Island
Sheffield City Council7941520013 Jan 2025£64k8 moClosed
Consultancy Agreement for a RIBA Workstage 1-2 Study for the church of St James the Great, Eve Hill, Dudley
West Midlands Combined Authority7940000024 Jan 2025£38k2 moClosed
Pendle Textile Mills Design Code - AWARD
Historic England9252200015 Apr 2024£42k10 moClosed
Total live value £1.7m · mean award £124k1–10 of 50

Top buyers · 37 buyers · top 3 = 50%

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

✓ From notices
1
Fusion21 Members Consortium
7 contracts
23%
since 2025
2
Rochdale Metropolitan Borough Council
1 contract
18%
since 2019
3
Wentworth Woodhouse Preservation Trust
2 contracts
9%
since 2021
4
City of York Council
1 contract
8%
since 2020
5
Historic England
2 contracts
6%
since 2017
6
Transport for London
1 contract
6%
since 2018
7
National Museums Liverpool
1 contract
4%
since 2025
8
London Borough of Lambeth
1 contract
3%
since 2019
9
Barnsley Metropolitan Borough Council
1 contract
3%
since 2023
10
Bath and North East Somerset Council
1 contract
2%
since 2019

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 West15 contracts
51%
Yorkshire6 contracts
22%
London6 contracts
11%
South West6 contracts
10%
West Midlands8 contracts
5%
South East2 contracts
1%
Eastern1 contract
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). Donald Insall Associates highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
JS
John Sisk and Son Ltd
No£67.8m1
PA
PURCELL ARCHITECTURE LIMITED
No£22.4m2
AE
AECOM LIMITED
No£2.8m10
D&
DREES & SOMMER UK LIMITED
Yes£2.7m3
T&
Turner & Townsend Project Management Ltd
No£1.8m4
DI
Donald Insall Associates
Yes£1.6m—
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
Due in -10d
Next due 30 Jun 2026
Confirmation statement
Up to date
Next due 14 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.
01550406
Status
Active
Type
Private limited
Incorporated
12 Mar 1981
Reg. office
12 Devonshire Street, London, W1G 7AB
SIC codes
71111
Last accounts
30 Sept 2024
Next accounts due
30 Jun 2026

Directors & PSC

  • ENSOR, Helen Louise Stratton — director
    Appointed 13 Mar 2023
  • PROUDFOOT, Dorian Jacob — director
    Appointed 13 Mar 2023
  • SHEPHERD, Robin Andrew — director
    Appointed 01 Jan 2022
  • BEAUMONT, Jennifer Lynn — secretary
    Appointed 01 Jan 2021
  • BEAUMONT, Jennifer Lynn — director
    Appointed 01 Jan 2021
  • MALAM, Simon Paul — director
    Appointed 01 Jan 2021

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
DONALD INSALL ASSOCIATES LIMITED
01550406 · this company

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