Company lists · Data refreshed September 2026

Top 25 Reliability engineering consulting firms based in the United Kingdom

Name: Reliability engineering consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 76 companies tracked

RevenueBase identified 76 reliability engineering consulting firms headquartered in the United Kingdom as of September 2026 and tracks 489 professional contacts across them, including 209 with verified work emails. London is the largest hub.

This list covers reliability engineering consulting firms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

76Companies

489Contacts tracked

209Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest reliability engineering consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 76 reliability engineering consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to reliability engineering consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ESR Technology	Partial evidence	Warrington, United KingdomHQ checked Sep 29, 2026	51-200	99 contacts →
	Partial evidence “ESR Technology delivers outstanding solutions related to the performance, safety, life and reliability of its customers’ capital assets.” Source: RevenueBase Database · checked Sep 29, 2026
2	53 North Group	Strong evidence	Sheffield, United KingdomHQ checked Sep 29, 2026	51-200	37 contacts →
	Strong evidence “53 Degrees North Engineering Ltd (53 North Group) which functions as IntelliAM’s engineering consultancy division, has provided a range of specialist engineering and reliability…” Source: RevenueBase Database · checked Sep 29, 2026
3	Al-Met LTD	Indirect evidence	Pontyclun, United KingdomHQ checked Sep 29, 2026	11-50	25 contacts →
	Indirect evidence “Our capability is critical to the performance and longevity of components used in the most demanding environments, where failure is not an option.” Source: RevenueBase Database · checked Sep 29, 2026
4	Ailsa Reliability Solutions LTD	Partial evidence	Kilwinning, United KingdomHQ checked Sep 29, 2026	11-50	24 contacts →
	Partial evidence “Reliability Solutions business focusing on maximising uptime performance and availability of key and critical plant and assets Evaluation and assessment for both reliability and…” Source: RevenueBase Database · checked Sep 29, 2026
5	Ceerisk Consulting LTD	Strong evidence	Teddington, United KingdomHQ checked Sep 29, 2026	11-50	20 contacts →
	Strong evidence “CEERISK is a multidisciplinary consulting firm established to identify engineering risks for different corporations and assist them in developing comprehensive solutions to…” Source: RevenueBase Database · checked Sep 29, 2026
6	XI Engineering Consultants LTD	Partial evidence	Edinburgh, United KingdomHQ checked Sep 29, 2026	11-50	18 contacts →
	Partial evidence “Core Capabilities, Elevated by Innovation: At Xi Engineering Consultants, our Consultancy Services deliver safe, reliable, and compliant engineering solutions focused on…” Source: RevenueBase Database · checked Sep 29, 2026
7	European Technology Development LTD	Strong evidence	The Axis Centre, United KingdomHQ checked Sep 29, 2026	11-50	18 contacts →
	Strong evidence “ETD Consulting provides independent technical engineering consulting and on-site services, innovative products and high quality training to the Power and Process Plant industries.” Source: RevenueBase Database · checked Sep 29, 2026
8	Astrimar LTD	Strong evidence	Inverurie, United KingdomHQ checked Sep 29, 2026	11-50	18 contacts →
	Strong evidence “Astrimar is an independent specialist engineering consultancy delivering excellence in:* Reliability, Integrity & Technical Risk Management * Technology Qualification * Innovative…” Source: RevenueBase Database · checked Sep 29, 2026
9	Encompass Engineering	Partial evidence	Derby, United KingdomHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “Encompass Engineering is an engineering consultancy that delivers specialist assurance, quality and engineering services to the Rail, Defence, Nuclear and Aerospace industries.” Source: RevenueBase Database · checked Sep 29, 2026
10	PSW Integrity	Partial evidence	Birkenhead, United KingdomHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “We are reliability engineers who support organisations where risk, performance and safety depend on the quality of asset data and decision-making.” Source: RevenueBase Database · checked Sep 29, 2026
11	Engineering Services Design Practice LTD	Partial evidence	Redditch, United KingdomHQ checked Sep 29, 2026	11-50	13 contacts →
	Partial evidence “Mechanical and Electrical Consulting Engineers and Sustainable Technology Consultants providing professional design services and energy advice to both Public and Private sector…” Source: RevenueBase Database · checked Sep 29, 2026
12	Isograph	Partial evidence	Warrington, United KingdomHQ checked Sep 29, 2026	11-50	11 contacts →
	Partial evidence “Isograph was founded in 1986 and acquired by PeakAvenue GmbH in 2024, and it’s now one of the world's leading companies in the development and provision of integrated Reliability…” Source: RevenueBase Database · checked Sep 29, 2026
13	AJS Asset Care	Strong evidence	Holbeach, United KingdomHQ checked Sep 29, 2026	1-10	11 contacts →
	Strong evidence “If you have unacceptable downtime, an ineffective maintenance regime or lack of reliability knowledge in your engineering team, then we can help.” Source: RevenueBase Database · checked Sep 29, 2026
14	DC White Engineering Consultants LTD	Partial evidence	Guildford, United KingdomHQ checked Sep 29, 2026	11-50	9 contacts →
	Partial evidence “DC White has provided engineering insight and analysis on some of the UK’s biggest engineering projects for over 30 years.” Source: RevenueBase Database · checked Sep 29, 2026
15	Advanced Maintenance Solutions	Partial evidence	Portskewett, United KingdomHQ checked Sep 29, 2026	1-10	6 contacts →
	Partial evidence “At Advanced Maintenance Solutions, we have the expertise to help improve your asset reliability.” Source: RevenueBase Database · checked Sep 29, 2026
16	PFE Limited	Strong evidence	Wirral, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Strong evidence “Maximising Machinery Uptime through Expert Reliability Engineering.” Source: RevenueBase Database · checked Sep 29, 2026
17	D3-Uk LTD	Partial evidence	Hebburn, United KingdomHQ checked Sep 29, 2026	11-50	4 contacts →
	Partial evidence “D3-UK Ltd is an independent engineering consultancy operating out of the North East of England, we pride ourselves on becoming partners with our clients by ensuring a common…” Source: RevenueBase Database · checked Sep 29, 2026
18	London Petrotech Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Overview London Petrotech Engineering Ltd delivers three specialist service lines: Engineering Consultancy, Forensic Engineering & Expert Witness, and Training.” Source: RevenueBase Database · checked Sep 29, 2026
19	Agile Engineering Consultancy LTD	Strong evidence	Frognall, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “With over 20 years’ experience in the construction industry, both contracting and consulting, Agile Engineering offer practical innovative solutions.” Source: RevenueBase Database · checked Sep 29, 2026
20	Ruler Consult	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “We are based in London and operate worldwide, providing Risk Engineering, Construction Risk Management and Specialist Consulting Services to major stakeholders, decisions makers…” Source: RevenueBase Database · checked Sep 29, 2026
21	Newby Engineering And Technology	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Consulting Engineers” Source: RevenueBase Database · checked Sep 29, 2026
22	Pro-Reliability Solutions	Partial evidence	Huddersfield, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “We specialise in reliability focus to maximise equipment effectiveness for our customers with minimum cost.” Source: RevenueBase Database · checked Sep 29, 2026
23	Kimberley Systems Engineering Limited	Partial evidence	Pulborough, United KingdomHQ checked Sep 29, 2026	11-50	3 contacts →
	Partial evidence “Kimberley Systems Engineering Limited provides systems engineering services in a broad range of industries with detailed practical knowledge in System Engineering, System Safety &…” Source: RevenueBase Database · checked Sep 29, 2026
24	Rams Engineering & Asset Management Consultancy Limited	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “RAMS Eng & Asset Management Consultancy Limited is a passionate and professional Reliability Engineering and Asset Management Consultancy firm that provides practical solution for…” Source: RevenueBase Database · checked Sep 29, 2026
25	Reliable Manufacturing LTD	Partial evidence	Warrington, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Reliable Manufacturing is a reliability-based change management consultancy.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: reliability engineering consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names reliability engineering consulting firms.
Partial evidence: Its own public description names part of reliability engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name reliability engineering consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 76 reliability engineering consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 209 reachable decision-makers.

Free signup · no credit card

View the full list →

Reliability engineering consulting firms based in the United Kingdom at a glance

As of Sep 29, 2026

42.7%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

13.2%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 76 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among reliability engineering consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “reliability engineering consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names reliability engineering consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among reliability engineering consulting firms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 209 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names reliability engineering consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many reliability engineering consulting firms are there based in the United Kingdom?

RevenueBase identified 76 reliability engineering consulting firms headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ESR Technology, headquartered in Warrington, tops this list with the largest team on record.

Which city has the most reliability engineering consulting firms?

London leads with 10 headquartered companies, followed by Warrington (3) and Aberdeen (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 209 verified decision-maker contacts tracked across these 76 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 76 reliability engineering consulting firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Reliability engineering consulting firms by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.