Company lists · Data refreshed September 2026

Top 25 Aircraft certification consulting companies based in the United Kingdom

Name: Aircraft certification consulting companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 136 companies tracked

RevenueBase identified 136 aircraft certification consulting companies headquartered in the United Kingdom as of September 2026 and tracks 953 professional contacts across them, including 289 with verified work emails. London is the largest hub.

This list covers aircraft certification consulting companies 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 19, 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 19, 2026 86% judged on-target in blind review

136Companies

953Contacts tracked

289Verified emails

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The 25 largest aircraft certification consulting companies based in the United Kingdom

Ranked by team size

Top 25 of 136 aircraft certification consulting companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to aircraft certification consulting companies: 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	Knsi Aviation Engineering	Indirect evidence	Bishop's Stortford, United KingdomHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “KNSI Aviation Engineering Ltd is a UK CAA and EASA Part-21.J DOA, Part-21.G POA approval holder.” Source: RevenueBase Database · checked Sep 19, 2026
2	Baines Simmons	Partial evidence	Bracknell, United KingdomHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “Baines Simmons is a world-leading aviation safety consultancy, specialising in regulations, compliance, safety management, training, consulting and outsourcing.” Source: RevenueBase Database · checked Sep 19, 2026
3	Aircamo	Partial evidence	Manchester, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “An organisation specialising in Private/Commercial Aircraft and Engine technical and CAMO Management advisory services supporting airlines, operators and the lessor community…” Source: RevenueBase Database · checked Sep 19, 2026
4	Helios Aviation Consultancy	Indirect evidence	Farnborough, United KingdomHQ checked Sep 19, 2026	51-200	24 contacts →
	Indirect evidence “Helios is the aviation consultancy of Egis, focussing on air traffic management and airports, with a worldwide reputation for excellence and integrity.” Source: RevenueBase Database · checked Sep 19, 2026
5	CFS Aeroproducts LTD	Indirect evidence	Warwick, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “CFS Aeroproducts Ltd is a CAA, EASA and FAA Part 145 approved company in operation since 1994.” Source: RevenueBase Database · checked Sep 19, 2026
6	Musketeer Solutions Limited	Indirect evidence	Peterborough, United KingdomHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Musketeer Solutions Ltd was founded in 2005 and has grown to become a leading aerospace engineering consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
7	Skysmart MRO	Indirect evidence	Dunmow, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “Skysmart MRO is a multi-award-winning, independent provider of component repair and technical services for airlines and the global aviation community.” Source: RevenueBase Database · checked Sep 19, 2026
8	Hive Composites LTD	Indirect evidence	Loughborough, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Hive are experts in designing, developing, testing and certifying new composite materials, processes and products including: • Next generation composite battery boxes for electric…” Source: RevenueBase Database · checked Sep 19, 2026
9	A2b Aero & Heli Maintenance Limited	Indirect evidence	Redhill, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “A2B Aero and Heli Maintenance are EASA & UK CAA Part 147, UK CAA / Guernsey (2-REG) Part 145 and UK CAA / Guernsey (2-REG) Part M (Subpart G&I) CAMO approved Organisation that…” Source: RevenueBase Database · checked Sep 19, 2026
10	STC Twenty ONE Limited	Indirect evidence	Alvaston, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “STC Twenty One Limited is an EASA approved Design Organisation based in the Midlands.” Source: RevenueBase Database · checked Sep 19, 2026
11	SWS Certification Services	Partial evidence	Port Talbot, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “Few companies have as broad a scope of services as SWS to support the aircraft interiors industry.” Source: RevenueBase Database · checked Sep 19, 2026
12	Aircraft Maintenance Services UK Based	Partial evidence	Chichester, United KingdomHQ checked Sep 19, 2026	1-10	14 contacts →
	Partial evidence “Providing independent Aircraft Maintenance Engineering Representative and Consultant and Auditor Services.” Source: RevenueBase Database · checked Sep 19, 2026
13	Skylight Aviation	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Skylight Aviation has a proven track record of successfully delivering project assignments for clients in Europe, Middle East, Asia and Australasia.” Source: RevenueBase Database · checked Sep 19, 2026
14	H4 Aerospace UK Limited	Indirect evidence	Hemel Hempstead, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “The company has brought together both Mechanical and Avionic/Electrical skilled design engineers, as a centre of excellence to meet the demands of its worldwide customer base and…” Source: RevenueBase Database · checked Sep 19, 2026
15	Hi-Tech Aerospace Components LTD	Indirect evidence	Coventry, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “No matter how small or large your job, Hi-Tech Aerospace Components are here to help.” Source: RevenueBase Database · checked Sep 19, 2026
16	Flyertech LTD	Indirect evidence	Hayward's Heath, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Founded in 2001, FlyerTech has established itself as a trusted provider of comprehensive Continuing Airworthiness Management services for both business and commercial aviation…” Source: RevenueBase Database · checked Sep 19, 2026
17	Airline Components International LTD ACI	Partial evidence	Abingdon, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “ACI are a UK based design, certification, manufacture and repair organisation for CABIN, COCKPIT & CARGO BAY INTERIOR PROJECTS ACI maintain UK CAA Part 21J & GCAA Part 21J (DOA -…” Source: RevenueBase Database · checked Sep 19, 2026
18	Aviateq International	Indirect evidence	Maidenhead, United KingdomHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “AviateQ provides aviation advice to its customers which include major oil operators, air operators, and airports, etc, in particular in the fields of safety management systems…” Source: RevenueBase Database · checked Sep 19, 2026
19	Retrotec Limited	Indirect evidence	East Sussex, United KingdomHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Aeronautical engineering specialists based at Unit 11, Westfield Business Park, Wheel Ln, Westfield, Hastings, TN35 4SE” Source: RevenueBase Database · checked Sep 19, 2026
20	AV Aerospace LTD	Indirect evidence	Rugby, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “AV Aerospace Ltd was founded by two professional design engineers with backgrounds in delivering complex avionics integration solutions from project inception through to final…” Source: RevenueBase Database · checked Sep 19, 2026
21	Solution Concepts LTD	Indirect evidence	Bexhill-on-sea, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Solution Concept was formed in 2009, by Bob Pickles.” Source: RevenueBase Database · checked Sep 19, 2026
22	Exponaero	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Strong evidence “ExponAero is an aerospace engineering services organization providing technical consulting and solutions for the entire aircraft lifecycle in the areas of “Aircraft Certification…” Source: RevenueBase Database · checked Sep 19, 2026
23	Naveo Consultancy	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “NAVEO is a focused aerospace consultancy dedicated to serving the needs of global clients, large and small.” Source: RevenueBase Database · checked Sep 19, 2026
24	Optimum Aero	Partial evidence	Arundel, United KingdomHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Aviation consultancy with a broad experience in commercial aircraft cabin interiors, retrofit and aftermarket.” Source: RevenueBase Database · checked Sep 19, 2026
25	Privatus Aviation LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Providing expertise in the private aviation sector” Source: RevenueBase Database · checked Sep 19, 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: aircraft certification consulting companies. 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 aircraft certification consulting companies.
Partial evidence: Its own public description names part of aircraft certification consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name aircraft certification consulting companies. 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 136 aircraft certification consulting companies based in the United Kingdom

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Aircraft certification consulting companies based in the United Kingdom at a glance

As of Sep 19, 2026

30.3%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

18.4%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

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 136 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 aircraft certification consulting companies, 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 “aircraft certification consulting companies”. 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 aircraft certification consulting companies), 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 aircraft certification consulting companies, 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, 289 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 19, 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.

Aircraft certification consulting companies by metro

Aircraft certification consulting companies in London25

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 aircraft certification consulting companies, 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 aircraft certification consulting companies are there based in the United Kingdom?

RevenueBase identified 136 aircraft certification consulting companies 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?

Knsi Aviation Engineering, headquartered in Bishops Stortford, tops this list with the largest team on record.

Which city has the most aircraft certification consulting companies?

London leads with 25 headquartered companies, followed by Bristol (5) and Ayr (3).

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 289 verified decision-maker contacts tracked across these 136 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 19, 2026.

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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.