Company lists · Data refreshed September 2026
Top 25 Diesel marine engine companies based in the United Kingdom
RevenueBase identified 73 diesel marine engine companies headquartered in the United Kingdom as of September 2026 and tracks 2,024 professional contacts across them, including 690 with verified work emails. Southampton is the largest hub.
This list covers diesel marine engine 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.
The 25 largest diesel marine engine companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,182 contacts → | ||||
Strong evidence “With a history stretching back to 1932, Perkins Engines Company Limited is a world leading provider of diesel and gas engines, providing the most comprehensive range of innovative…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 87 contacts → | ||||
Strong evidence “Mitchell Powesystems specialise in the supply, overhaul and repair of industrial & Marine Diesel Engines, Allison Automatic Transmissions, Off-Highway Driveline Products and the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 84 contacts → | ||||
Strong evidence “Caudwell Marine was founded to bring a new standard of diesel outboard technology to the marine industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 83 contacts → | ||||
Strong evidence “Prior Power Solutions is a leading supplier of specialised diesel-driven, alternative, and sustainable power systems, equipment and services to the oil and gas, marine…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 78 contacts → | ||||
Strong evidence “As the manufacturer of the only purpose-built high-powered diesel outboard, we are working to power the global marine industry through sustainable innovation, applying alternative…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 68 contacts → | ||||
Strong evidence “Royston are a dynamic and expanding diesel engine supply, service and repair company operating successfully within the marine, offshore, industrial, defence and rail sectors for…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 54 contacts → | ||||
Indirect evidence “Providing Safety through Mechanical Excellence.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 49 contacts → | ||||
Strong evidence “IPU Group design and manufacture high quality engine starting, fuel polishing, emissions solutions and components for critical diesel and gas engine applications.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 33 contacts → | ||||
Strong evidence “PB ASHER Ltd specialise in the reconditioning, supply and exchange of Marine, Commercial and Industrial engine components such as Cylinder Heads, Liners, Pistons, Con Rods, Fuel…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 contacts → | ||||
Indirect evidence “In October 2013, MacGregor acquired Hatlapa to strengthen its position in the merchant shipping segment with a product portfolio that contained a wide range of deck machinery.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 12 contacts → | ||||
Partial evidence “Industrial Engines are suppliers of Engines for Industrial Equipment.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Strong evidence “Mermaid Marine offers a range of heat exchanger keel cooled marine diesel propulsion and auxiliary engines up to 825hp, suitable for a variety of applications including fishing…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Strong evidence “Since 1987 Beta Marine has developed an enviable reputation for providing quiet and smooth running marine diesel engines and generating sets to suit a wide range of applications.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Strong evidence “Marine Engineering Company trading since 1985 Specialists in Marine Diesel – Low, Medium and High Speed.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Partial evidence “A R PEACHMENT LIMITED is a maritime company based out of Riverside Estate, Brundall, England, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Partial evidence “Proteum is a UK based marine distributor with offices in Southampton.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Strong evidence “Sleeman and Hawken have been trading over 50 years with marine and industrial diesel engines plus related products.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Partial evidence “Since the inception of Thames Diesel Injection Parts in 1988 continuous expansion has demanded ever larger premises to handle the increasing volume of business.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 contacts → | ||||
Strong evidence “UK Distributor for Industrial and Marine Diesel Engines and Generators, along with petrol engines, pumps and generators.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 6 contacts → | ||||
Strong evidence “James Troop & Co Ltd was established in 1867 developing over 150 years to become a leading supplier of diesel and gas engine spare parts, servicing and engine sales to both the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Strong evidence “Marine Machine UK ltd specialise in the overhaul, repair & service of medium & high speed diesel & gas engines.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Strong evidence “WaterMota has been supplying the marine industry with engine room packages since 1911.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Strong evidence “Established in 1990 Powerdrive are specialists in Diesel fuel injection systems, including overhauls,repairs and Spare parts procurement in the Automotive and Marine industry…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: diesel marine engine 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 diesel marine engine companies.
- Partial evidence
- Its own public description names part of diesel marine engine companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name diesel marine engine 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 73 diesel marine engine companies based in the United Kingdom
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Diesel marine engine companies based in the United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
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 73 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 diesel marine engine 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 “diesel marine engine 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 diesel marine engine 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 diesel marine engine 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, 690 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.
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 diesel marine engine 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 diesel marine engine companies are there based in the United Kingdom?
RevenueBase identified 73 diesel marine engine 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?
Perkins Engines Company Limited, headquartered in Peterborough, tops this list with the largest team on record.
Which city has the most diesel marine engine companies?
Southampton leads with 4 headquartered companies, followed by Great Yarmouth (3) and Bedford (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 690 verified decision-maker contacts tracked across these 73 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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Download this list →Related lists
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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.
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- Diesel marine engine companies based in Türkiye