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  4. ISOLER LTD.
IS

ISOLER LTD.

Construction materials · Durham
Large

ISOLER LTD. specializes in fire safety solutions, including fire prevention and protection services. They offer a range of services to support clients in the public sector and construction industry with building safety and compliance.

isoler.co.uk ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£2.6m
Live
6
Buyers
8
12m
£1.5m
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities1
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts6 / 13
  • Top buyers8
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — ISOLER LTD.Updated 06 Jul 2026

At a glance · for buyers and watchdogs

ISOLER LTD. has won £2.6m across 8 public-sector buyers, with 6 live contracts. No active Companies House risk flags.

Why: top buyer BELIEVE HOUSING LIMITED at 54% · 100% in Construction materials · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
6 of 13Live contracts
54%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 · 11
Fire Stopping and CompartmentationFire Door Installation and MaintenanceIntumescent Paint and Structural Board ProtectionFire DampersFire Risk Assessmentup to 11m ↗Principal Designer (CDM 2015)Principal Designer (BSA 2022)Certified Clerk of Works ServicesGeneral Construction Health & Safety AdviceWaking WatchTraining
Frameworks & DPS · 1 from notices
  • Dynamic Purchasing System (DPS) 85 Construction Works & Specialist Services for Housing, Commercial & Public Buildings and SchoolsNORTH TYNESIDE COUNCIL · £70k

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

Case studies

Delivery stories the supplier has published, with sector and outcome.

⚑ Self-reported
—

No case studies yet

Once a claimed supplier publishes delivery stories — the buyer, the sector, what was delivered and the outcome — they appear here.

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 · 6 live · 7 historic

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

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Fire Surveys and Remediation Framework
BELIEVE HOUSING LIMITED—11 Feb 2026£1.4m2 yrspending
Mini Competition - Boroughwide Fire Door Replacements
NORTH TYNESIDE COUNCIL4400000005 Jan 2026£68k3 moClosed
Fire Stopping Works to mid and high rise residential blocks
Your Homes Newcastle Ltd4500000008 Apr 2024£98k7 moClosed
Dynamic Purchasing System (DPS) 85 Construction Works & Specialist Services for Housing, Commercial & Public Buildings and Schools
NORTH TYNESIDE COUNCIL4500000001 Apr 2022£70k2 yrsClosed
CA7687 - Fire Rectification Works Framework for Karbon Homes
Karbon Homes4534300013 May 2021£26k4 yrsClosed
Fire Stopping Works at Vale House, Shieldfield House & Proctor Court, Newcastle upon Tyne
Your Homes Newcastle Ltd4500000001 Nov 2017£554k12 moClosed
Various Multi-Storey Blocks - Fire Stopping to Communal Areas
Your Homes Newcastle Ltd4500000001 Jun 2017£400k12 moClosed
London Construction Programme General Works Framework MW25-GW
London Borough of Haringey45000000———Live
Firestopping Protection and Associated Works
Durham County Council————Live
Industrial Doors & Fire Doors - Maintenance, Supply & Installation - ORE/22/053
Offshore Renewable Energy Catapult45000000———Live
Total live value — · mean award £203k1–10 of 13

Top buyers · 8 buyers · top 3 = 99%

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

✓ From notices
1
BELIEVE HOUSING LIMITED
2 contracts
54%
since 2026
2
Your Homes Newcastle Ltd
3 contracts
40%
since 2017
3
NORTH TYNESIDE COUNCIL
2 contracts
5%
since 2022
4
Karbon Homes
2 contracts
1%
since 2021
5
London Borough of Haringey
1 contract
0%
6
Durham County Council
1 contract
0%
7
Offshore Renewable Energy Catapult
1 contract
0%
8
Gentoo Group
1 contract
0%

Category mix

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

✓ From notices
Construction materials44
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 East11 contracts
100%
London1 contract
0%
Scotland1 contract
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). ISOLER LTD. highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
WD
Willmott Dixon Construction Limited
No£77.1m4
TC
Topcoat Construction Limited / TCL Group
Yes£67.6m2
IW
Ian Williams
No£67.6m2
WH
Westone Housing
Yes£67.6m2
ER
EQUANS Regeneration Limited
No£67.6m2
IS
ISOLER LTD.
No£1.5m—
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 07 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.
02766783
Status
Active
Type
Private limited
Incorporated
23 Nov 1992
Reg. office
Unit 1 Belmont Industrial Estate, Durham, DH1 1TN
SIC codes
43999
Last accounts
31 Mar 2025
Next accounts due
31 Dec 2026

Directors & PSC

  • GILSTIN, Nichol Cecilia — director
    Appointed 01 Sept 2025
  • DAVIES, John Peter — director
    Appointed 18 Jan 2024
  • WATKINS, Paul Preston — director
    Appointed 01 Nov 2023
  • WATSON, Josh Gary — director
    Appointed 16 Aug 2019
  • ROBERTS, Steven Mark — director
    Appointed 01 Oct 2012
  • EDGELL, Wendy Ann — secretary
    Appointed 26 Oct 2011
  • Northern Bear Construction 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
ISOLER LTD.
02766783 · this company

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