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LS

Ludlum Systems Limited

Security & defence · Uxbridge
Large
ludlumsystems.com ↗
Compare peers
Awarded
£1.9m
Live
4
Buyers
6
12m
£1.2m
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts4 / 11
  • Top buyers6
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — Ludlum Systems LimitedUpdated 06 Jul 2026

At a glance · for buyers and watchdogs

Ludlum Systems Limited has won £1.9m across 6 public-sector buyers, with 4 live contracts. No active Companies House risk flags.

Why: top buyer NRS Ltd at 65% · 100% in Security & defence · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
4 of 11Live contracts
65%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.

⚑ Self-reported & from notices

Service tags, sectors served and target geographies appear here once a supplier verifies ownership of this profile.

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 · 4 live · 7 historic

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

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
DNA Boilers - Purchase of Waste Monitoring Equipment
NRS Ltd3511320006 Jul 2026£1.2m12 moLive
IPM9 Rebuild Kit
Dounreay3834150003 Feb 2025£68k1 moClosed
Berkeley - Delivery of a Functional RADOS Machine with On-Site Installation etc
Nuclear Restoration Services (NRS)5031200028 Jan 2025£40k3 moClosed
Model 4530-14000 Gate Monitor - G5 Base System
Nuclear Restoration Services (NRS)9839100014 Oct 2024£108k6 moClosed
HFC-8 WITH ALPHA BETA PLASTIC DETECTORS
Nuclear Restoration Services (NRS)3168221026 Mar 2024£81k—Closed
QA2 GOODS - HWM-400 4 DETECTOR WITH 30MM LEAD SHIELDING - 1 MANUAL DOOR
Nuclear Restoration Services (NRS)9839100026 Feb 2024£97k1 moClosed
2 X HWM-38 Clearance Monitors SGHWR
Nuclear Restoration Services (NRS)3854700031 Jan 2024£106k2 moClosed
Thermo 7,8 and 9 Radiometric IPM Upgrade Kits
Sellafield Limited38341600———Live
Calibration & Maintenance of Radiological Measuring Instruments Services
Magnox Limited38410000———Live
IPM Upgrade
CTM Portal for the NDA Shared Services Alliance38341600———Live
Total live value £1.2m · mean award £170k1–10 of 11

Top buyers · 6 buyers · top 3 = 100%

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

✓ From notices
1
NRS Ltd
1 contract
65%
since 2026
2
Nuclear Restoration Services (NRS)
6 contracts
31%
since 2024
3
Dounreay
1 contract
4%
since 2025
4
Sellafield Limited
1 contract
0%
5
Magnox Limited
1 contract
0%
6
CTM Portal for the NDA Shared Services Alliance
1 contract
0%

Category mix

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

✓ From notices
Security & defence35
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 West2 contracts
0%
South West1 contract
0%
Region resolved for 0% of awarded value (by buyer postcode); the remainder lacks a usable address.

Peers

Suppliers with overlapping CPVs & buyers (last 24m). Ludlum Systems Limited highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
AC
Amentum Clean Energy Limited
No£581.4m11
CN
CAVENDISH NUCLEAR LIMITED
No£576.2m5
A(
A2R (Altrad Support Services Limited and AtkinsRéalis UK Limited)
No£575.0m2
SH
Shepley
No£575.0m1
N(
NDS (Altrad Support Services Ltd
No£575.0m1
LS
Ludlum Systems Limited
No£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 31 Dec 2025
Confirmation statement
Due in -12d
Next due 29 Jun 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.
13025528
Status
Active
Type
Private limited
Incorporated
17 Nov 2020
Reg. office
Et Enterprises Limited, 45 Riverside Way, Cowley, Uxbridge, UB8 2YF
SIC codes
71129
Last accounts
31 Dec 2025
Next accounts due
30 Sept 2027

Directors & PSC

  • READ, Paul Michael, Doctor — director
    Appointed 01 Jan 2021
  • LUDLUM, Laurence Merl — director
    Appointed 17 Nov 2020
  • MCPHERSON, Jeanie Kay — director
    Appointed 17 Nov 2020
  • Mr Laurence Merl Ludlum — person with significant control
    significant influence or control

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
LUDLUM SYSTEMS LIMITED
13025528 · this company

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