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Company

Hartley Mcmaster Limited

Hartley Mcmaster Limited is an active UK company (number 02638728), incorporated 1991, with 1 current director, Thomas Peter Dewar. Source: Companies House, updated 11th October 2026.

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Official record Companies House · updated 11th October 2026 · Sources · Free, no card or password

Network

The large node is Hartley Mcmaster Limited. Red nodes are organisations, white nodes are people. Dashed links are historical or inferred. Click any node to explore.

Who leads it

Previous officers 3

  1. Martin Slaughter 2019 Director View profile
  2. John Lofthouse 2017-2020 Secretary View profile
  3. Pamela Jane Slaughter 2017 Secretary View profile

Directors and secretaries as filed at Companies House.

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Public contracts won

3 contracts · £502,909 total

From Contracts Finder and Find a Tender, the UK Government's public procurement notices, under the Open Government Licence v3.0. Matched to this organisation by company number, charity number or exact name and postcode; every figure links to its source notice.

  • CPT_26_39 Specialist model assurance support Buyer: National Audit Office £336,000 2026-08-01 CPV 79210000 Source: Contracts Finder

    The National Audit Office awarded a contract to Hartley McMaster Limited through the Crown Commercial Services GCloud 14 framework. The supplier will oversee and lead the testing of a subset of models within the NAO model assurance portfoli…

  • CPT_24_52 Specialist model assurance support Buyer: National Audit Office £166,909 2025-03-06 CPV 72225000 Source: Contracts Finder

    The National Audit Office (NAO) awarded a contract to Hartley McMaster Limited who will oversee and lead the testing of a subset of models with the NAO model assurance portfolio by • validation, verification and testing models and reconcil…

  • G Cloud 15 Buyer: Government Commercial Agency Value not published Date not published Source: Find a Tender

    G-Cloud 15 (GC15) is the replacement for G-Cloud 14 (GC14), G-Cloud 14 Lot 4 (GC14.4) and Cloud Compute 2 (CC2). It is the largest framework of its kind in the public sector. G-Cloud spend for FY23/24 was £3.1bn and Cloud Compute was £0.5m.…

    Framework

About

Incorporated
16/08/1991

Ownership

Owned by (4) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.

Group

  1. Hartley Mcmaster Limited is controlled by Thomas Peter Dewar
    Evidence
    active appoints directors · notified 2017-11-01 · source: Companies House PSC register

Ultimately controlled by Thomas Peter Dewar.

1 other company in this group

Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.

Board analysis

Board DNA

How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.

1 directors on the board

8.9y median 8.9y
average tenure
8.9y
longest tenure

Directors past 6 years

First-time vs portfolio directors

Portfolio (1)

0
also govern a charity
0
left in the last 12 months

Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.

Finance 1

The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.

Gaps to watch

  • A single director - no second pair of eyes on any decision

Where to look Suggested search: a second director to remove single-point control.

Sources

Official record from Companies House. Governance Register calculates the connections.

Record details
Company number
02638728
Status
Active
Type
Private Limited Company
Edition
Register edition compiled 11th October 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

Contains public sector information licensed under the Open Government Licence v3.0. Report an issue · How we handle data