Company lists · Data refreshed October 2026
Top 13 Fusion energy research organizations based in the United Kingdom
RevenueBase identified 35 company matches for fusion energy research organizations associated with the United Kingdom as of October 2026 and tracks 2,369 professional contacts across them, including 234 with verified work emails. Abingdon is the largest hub.
This list covers company matches for fusion energy research organizations associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 13 largest fusion energy research organizations based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 268 contacts → | ||||
Exact match “We are developing the technology to deliver clean, secure and affordable fusion energy in the 2030s.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 2 | 92 contacts → | ||||
Exact match “First Light Fusion Ltd is a lean, focused and agile corporation researching energy generation by inertial fusion energy (IFE).” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 3 | 39 contacts → | ||||
Exact match “As the UK’s national laboratory for nuclear fission, NNL is harnessing nuclear science to help solve some of the world’s biggest challenges.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 4 | 33 contacts → | ||||
Exact match “Based in Bristol, UK, Astral Systems was founded in 2021.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 5 | 22 contacts → | ||||
Exact match “Oxford Sigma is a Fusion Technology company with a vision to tackle energy security and climate change by accelerating the commercialisation of fusion energy.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 6 | 15 contacts → | ||||
Exact match “The STEP programme will build a prototype fusion energy plant and create a UK-led fusion industry.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 7 | 9 contacts → | ||||
Exact match “Fusion energy commercialised at scale will provide abundant, low-carbon, on-demand electricity.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 8 | 8 contacts → | ||||
Exact match “Fusion Advisory Services (FAS) provides independent intelligence and analysis to the organisations shaping fusion's future, such as governments, investors, private developers and…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 9 | 6 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 10 | 3 contacts → | ||||
Exact match “Woodruff Scientific LTD is based at the Harwell Innovation Centre in Oxfordshire, UK.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 11 | 2 contacts → | ||||
Exact match “Acelocal Ltd.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 12 | 1 contacts → | ||||
Exact match “Our mission is to further advance the development and commercialization of our TRL4* & TRL6* fusion technology prototypes by partnering with clean-energy-focused industrials and…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 13 | 1 contacts → | ||||
Exact match “Fusion Reactors is developing a fusion reactor to deliver electricity to the grid from fusion energy.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “fusion energy research organizations”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 13 of 35 fusion energy research organizations based in the United Kingdom
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Fusion energy research organizations based in the United Kingdom at a glance
As of Oct 13, 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 35 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “fusion energy research organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 234 professional contacts with verified work emails across the full matched dataset. 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 October 13, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “fusion energy research organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many fusion energy research organizations are there based in the United Kingdom?
RevenueBase identified 35 company matches for fusion energy research organizations associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Tokamak Energy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most fusion energy research organizations?
Abingdon leads with 4 company records, followed by London (4) and Oxford (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 234 professional contacts with verified work emails tracked across these 35 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 2026.
Ready to reach these companies? Verified emails and direct dials for all 35 fusion energy research organizations based in the United Kingdom. Start with a free account, no credit card.
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Fusion energy research organizations by geography
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 SmartSearch, 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.
More company lists
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- New lists
- Fusion energy research organizations based in Germany
- Fusion energy research organizations based in the United States
- AI companies based in the United Kingdom
- Cybersecurity companies based in the United Kingdom
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Company intelligence · public preview
Top 13 fusion energy research organizations based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 35 matching company records for fusion energy research organizations based in the United Kingdom, with 2,369 tracked contacts and 234 verified work emails.
This public preview shows 13 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 13 fusion energy research organizations based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Tokamak Energytokamakenergy.com HQ: Milton, United KingdomReported employees: 201-500 | Milton, United Kingdom | 201-500 | Exact match | 268 contacts → |
“We are developing the technology to deliver clean, secure and affordable fusion energy in the 2030s.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | First Light Fusionfirstlightfusion.com HQ: Yarnton, United KingdomReported employees: 51-200 | Yarnton, United Kingdom | 51-200 | Exact match | 92 contacts → |
“First Light Fusion Ltd is a lean, focused and agile corporation researching energy generation by inertial fusion energy (IFE).” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | National Nuclear Laboratorynnl.co.uk HQ: Warrington, United KingdomReported employees: 1,001-5,000 | Warrington, United Kingdom | 1,001-5,000 | Exact match | 39 contacts → |
“As the UK’s national laboratory for nuclear fission, NNL is harnessing nuclear science to help solve some of the world’s biggest challenges.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Astral Systemsastralsystems.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 33 contacts → |
“Based in Bristol, UK, Astral Systems was founded in 2021.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Oxford Sigmaoxfordsigma.com HQ: Oxford, United KingdomReported employees: 11-50 | Oxford, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Oxford Sigma is a Fusion Technology company with a vision to tackle energy security and climate change by accelerating the commercialisation of fusion energy.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Step Fusionstepfusion.com HQ: Retford, United KingdomReported employees: 201-500 | Retford, United Kingdom | 201-500 | Exact match | 15 contacts → |
“The STEP programme will build a prototype fusion energy plant and create a UK-led fusion industry.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Fusionx Groupfusionxinvest.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Fusion energy commercialised at scale will provide abundant, low-carbon, on-demand electricity.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Fusion Advisory Services LTDfas.energy HQ: Oxford, United KingdomReported employees: 1-10 | Oxford, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Fusion Advisory Services (FAS) provides independent intelligence and analysis to the organisations shaping fusion's future, such as governments, investors, private developers and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | CCFEccfe.ukaea.uk HQ: Abingdon, United KingdomReported employees: 11-50 | Abingdon, United Kingdom | 11-50 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Woodruff Scientific LTDwoodruffscientific.com HQ: Harwell, United KingdomReported employees: 1-10 | Harwell, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Woodruff Scientific LTD is based at the Harwell Innovation Centre in Oxfordshire, UK.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Acelocal Limitedacelocal.ltd HQ: Hullbridge, United KingdomReported employees: 1-10 | Hullbridge, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Acelocal Ltd.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Team Scotia LTDteamscotia.com HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Our mission is to further advance the development and commercialization of our TRL4* & TRL6* fusion technology prototypes by partnering with clean-energy-focused industrials and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Fusion Reactorsfusion-reactors.com HQ: Goring, United KingdomReported employees: 1-10 | Goring, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Fusion Reactors is developing a fusion reactor to deliver electricity to the grid from fusion energy.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 13 of 35 company matches
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Fusion energy research organizations: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
34 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 35 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for fusion energy research organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fusion energy research organizations did RevenueBase find based in the United Kingdom?
The saved snapshot records 35 matching company records, 2,369 tracked contacts and 234 verified emails. The public preview displays 13 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fusion energy research organizations by geography
Cite this list
RevenueBase Data Team. Top 13 fusion energy research organizations based in the United Kingdom. Snapshot: October 13, 2026. https://revenuebase.ai/companies/fusion-energy-research-organizations/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fusion energy research organizations based in Germany
- Fusion energy research organizations based in the United States
- AI companies based in the United Kingdom
- Cybersecurity companies based in the United Kingdom
- Manufacturing companies based in the United Kingdom
- Media companies based in the United Kingdom
Company intelligence · public preview
Top 13 fusion energy research organizations based in the United Kingdom
RevenueBase records 35 matching company records for fusion energy research organizations based in the United Kingdom, with 2,369 tracked contacts and 234 verified work emails.
This public preview shows 13 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 13 fusion energy research organizations based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Tokamak Energytokamakenergy.com HQ: Milton, United KingdomReported employees: 201-500 | Milton, United Kingdom | 201-500 | Exact match | 268 contacts → |
“We are developing the technology to deliver clean, secure and affordable fusion energy in the 2030s.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | First Light Fusionfirstlightfusion.com HQ: Yarnton, United KingdomReported employees: 51-200 | Yarnton, United Kingdom | 51-200 | Exact match | 92 contacts → |
“First Light Fusion Ltd is a lean, focused and agile corporation researching energy generation by inertial fusion energy (IFE).” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | National Nuclear Laboratorynnl.co.uk HQ: Warrington, United KingdomReported employees: 1,001-5,000 | Warrington, United Kingdom | 1,001-5,000 | Exact match | 39 contacts → |
“As the UK’s national laboratory for nuclear fission, NNL is harnessing nuclear science to help solve some of the world’s biggest challenges.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Astral Systemsastralsystems.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 33 contacts → |
“Based in Bristol, UK, Astral Systems was founded in 2021.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Oxford Sigmaoxfordsigma.com HQ: Oxford, United KingdomReported employees: 11-50 | Oxford, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Oxford Sigma is a Fusion Technology company with a vision to tackle energy security and climate change by accelerating the commercialisation of fusion energy.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Step Fusionstepfusion.com HQ: Retford, United KingdomReported employees: 201-500 | Retford, United Kingdom | 201-500 | Exact match | 15 contacts → |
“The STEP programme will build a prototype fusion energy plant and create a UK-led fusion industry.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Fusionx Groupfusionxinvest.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Fusion energy commercialised at scale will provide abundant, low-carbon, on-demand electricity.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Fusion Advisory Services LTDfas.energy HQ: Oxford, United KingdomReported employees: 1-10 | Oxford, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Fusion Advisory Services (FAS) provides independent intelligence and analysis to the organisations shaping fusion's future, such as governments, investors, private developers and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | CCFEccfe.ukaea.uk HQ: Abingdon, United KingdomReported employees: 11-50 | Abingdon, United Kingdom | 11-50 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Woodruff Scientific LTDwoodruffscientific.com HQ: Harwell, United KingdomReported employees: 1-10 | Harwell, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Woodruff Scientific LTD is based at the Harwell Innovation Centre in Oxfordshire, UK.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Acelocal Limitedacelocal.ltd HQ: Hullbridge, United KingdomReported employees: 1-10 | Hullbridge, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Acelocal Ltd.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Team Scotia LTDteamscotia.com HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Our mission is to further advance the development and commercialization of our TRL4* & TRL6* fusion technology prototypes by partnering with clean-energy-focused industrials and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Fusion Reactorsfusion-reactors.com HQ: Goring, United KingdomReported employees: 1-10 | Goring, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Fusion Reactors is developing a fusion reactor to deliver electricity to the grid from fusion energy.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 13 of 35 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Fusion energy research organizations: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
34 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 35 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for fusion energy research organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fusion energy research organizations did RevenueBase find based in the United Kingdom?
The saved snapshot records 35 matching company records, 2,369 tracked contacts and 234 verified emails. The public preview displays 13 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Fusion energy research organizations by geography
Cite this list
RevenueBase Data Team. Top 13 fusion energy research organizations based in the United Kingdom. Snapshot: October 13, 2026. https://revenuebase.ai/companies/fusion-energy-research-organizations/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Fusion energy research organizations based in Germany
- Fusion energy research organizations based in the United States
- AI companies based in the United Kingdom
- Cybersecurity companies based in the United Kingdom
- Manufacturing companies based in the United Kingdom
- Media companies based in the United Kingdom