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GE

GEM Environmental Building Services Limited

London
Large

GEM Environmental Building Services Limited is a UK building services company established in 1999, specialising in water hygiene and Legionella control services, primarily for local authorities and schools. The company has been at the forefront of environmental building services for over 25 years, providing 24/7/365 service to over 200 communal boiler houses. GEM holds ISO certifications and provides accredited and certified installation services with a qualified engineering team.

gemebs.com ↗

Summary from the supplier’s website — unverified

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Awarded
£113.5m
Live
6
Buyers
9
12m
—
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities3
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts6 / 11
  • Top buyers9
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — GEM Environmental Building Services LimitedUpdated 20 Jul 2026

At a glance · for buyers and watchdogs

GEM Environmental Building Services Limited has won £113.5m across 9 public-sector buyers, with 6 live contracts. No active Companies House risk flags.

Why: top buyer Notting Hill Genesis at 84% · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
6 of 11Live contracts
84%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
Sectors served · 3/8
Central government✓
Local government✓
NHS & health✓
Housing✓
Utilities & energy✓
Financial services✓
Education✓
Defence✓
Services · 7
Legionella Risk Assessment
Hot and Cold Water Monitoring
Water System Inspection
Cleaning and Disinfection Services
Legionella Sampling
Plant and Equipment Servicing
Communal Boiler House Management
Frameworks & DPS · 3 from notices
  • UntitledIslington · £11.7m
  • Luton Council FTS Open Tender Framework procurement for Mechanical Services Support: Domestic Gas Servicing and Associated Work, Domestic Boiler Replacement and Associated Work, Communal Boiler Servicing; Maintenance and Mechanical, Water Treatment Services and Associated Works.Luton Borough Council · £1.5m
  • Electrical SupportLuton Council · £667k

Extracted automatically from gemebs.com on Jun 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 · 4

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

◐ From supplier website
Core credentials · 2/6
Cyber EssentialsNot evidenced✓
Cyber Essentials PlusNot evidenced✓
ISO 27001 — Information securityNot evidenced✓
ISO 9001 — QualityListed on site✓
ISO 14001 — EnvironmentalListed on site✓
ISO 45001 — Health & safetyNot evidenced✓
Other credentials & memberships · 2
ISO 18001
Legionella Control Association Member

Extracted automatically from gemebs.com on Jun 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 · 6 live · 5 historic

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

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Unmetered and Domestic Heating Services Framework Agreement
Notting Hill Genesis5072000003 Sept 2024£94.8m4 yrsLive
Fusion21 Heating, Renewables, and Electrical Framework
Fusion21 Members Consortium4523214130 Jan 2024£4.0m4 yrsLive
Plantroom Works at Queen Elizabeth House
WANDLE HOUSING ASSOCIATION LIMITED4410000001 Mar 2024£258k3 moClosed
Fielding Street Boiler Replacement Works Capital Works 2020
London Borough of Southwark4500000024 Jul 2023£164k2 moClosed
Luton Council FTS Open Tender Framework procurement for Mechanical Services Support: Domestic Gas Servicing and Associated Work, Domestic Boiler Replacement and Associated Work, Communal Boiler Servicing; Maintenance and Mechanical, Water Treatment Services and Associated Works.
Luton Borough Council4523214101 Apr 2023£1.5m4 yrsLive
Electrical Support
Luton Council4400000001 Apr 2022£667k5 yrsLive
AHU HEATING & BOILER REPLACEMENT AND IMPROVEMENT WORKS - SULHAMSTEAD RANGE
Thames Valley Police4216000026 Nov 2021£167k—Closed
Untitled
Islington4216000001 Jun 2020£11.7m3 yrsClosed
Heating and Compliancy Management Framework
South East Consortium5072000010 Dec 2019£303k4 yrsClosed
Unmetered and Domestic Heating Services Framework Agreement
Notting Hill Genesis50720000———Live
Total live value £100.9m · mean award £10.3m1–10 of 11

Top buyers · 9 buyers · top 3 = 97%

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

✓ From notices
1
Notting Hill Genesis
2 contracts
84%
since 2024
2
Islington
1 contract
10%
since 2020
3
Fusion21 Members Consortium
2 contracts
4%
since 2024
4
Luton Borough Council
1 contract
1%
since 2023
5
Luton Council
1 contract
1%
since 2022
6
South East Consortium
1 contract
0%
since 2019
7
WANDLE HOUSING ASSOCIATION LIMITED
1 contract
0%
since 2023
8
Thames Valley Police
1 contract
0%
since 2021
9
London Borough of Southwark
1 contract
0%
since 2023

Geography

Distribution of awarded value by buyer region.

✓ From notices
UK · schematic only
London5 contracts
94%
North West2 contracts
4%
Eastern2 contracts
2%
South East2 contracts
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). GEM Environmental Building Services Limited highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
KC
Kier Construction
Yes£35.4m2
WD
Willmott Dixon Construction Limited
No£28.1m2
CC
Clegg Construction Limited
No£18.8m2
TP
TRAVIS PERKINS TRADING COMPANY LIMITED
No£14.0m1
MS
Morgan Sindall Construction and Infrastructure
No£12.5m1
GE
GEM Environmental Building Services Limited
No——
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
Due in -63d
Next due 20 May 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.
03893436
Status
Active
Type
Private limited
Incorporated
13 Dec 1999
Reg. office
130 Shaftesbury Avenue, 2nd Floor, London, W1D 5EU
SIC codes
62012 · 62020 · 81100
Last accounts
30 Jun 2025
Next accounts due
29 Mar 2027

Directors & PSC

  • KELLY, Niall, Mr. — director
    Appointed 08 Apr 2026
  • BATTING, Greg Edward John — director
    Appointed 08 Apr 2026
  • GHAIWAL, Vivek Kumar — director
    Appointed 08 Apr 2026
  • SLATER, David Allen — director
    Appointed 08 Apr 2026
  • HARRIS, Keith William — director
    Appointed 17 Jan 2022
  • BARNEY, Mitchell Edward — director
    Appointed 11 Jan 2022
  • Socius Investments 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
GEM ENVIRONMENTAL BUILDING SERVICES LIMITED
03893436 · this company

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