Company lists · Data refreshed September 2026
Top 25 Internet service providers based in the United Kingdom
Find 357 internet service providers based in the United Kingdom, with company records and 20,820 contacts, including 6,660 email addresses. The list was updated in September 2026 and includes providers across the market, with London as the single most-represented city. Use it to research potential vendors, partners, and sales prospects.
Internet service providers are companies that provide internet access to households, businesses, public organizations, or other customers through wired, wireless, fiber, cable, satellite, or other network connections. This list covers companies that provide internet access services directly to residential, commercial, government, or institutional customers. Ranked by team size, largest first. Data current as of September 6, 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 internet service providers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,839 contacts → | ||||
Indirect evidence “We’re in the process of growing all parts of our business so we can connect more customers to the things and to the people they care about.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,460 contacts → | ||||
Indirect evidence “At CityFibre, we’re building a new, intelligent, open-access fibre network, purpose built for the data age.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,295 contacts → | ||||
Indirect evidence “Hyperoptic was founded in 2011 to shake up the broadband market, and we're proud to be forever in our customers' corner.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 521 contacts → | ||||
Indirect evidence “Zen is a B Corp certified telecommunications and technology service provider in the UK.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 483 contacts → | ||||
Indirect evidence “Whichever way you look at it, we are London’s best broadband- London's fastest broadband network - London’s best quality broadband network (Opensignal)*- Which?” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 362 contacts → | ||||
Indirect evidence “euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 326 contacts → | ||||
Indirect evidence “Our mission is to bring Full Fibre broadband to homes and businesses across Northern Ireland and Great Britain, especially to those who need it most.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 310 contacts → | ||||
Indirect evidence “When it comes to business, there’s no city like London.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 304 contacts → | ||||
Indirect evidence “Broadband built for you” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 278 contacts → | ||||
Indirect evidence “Get a better kind of broadband from YouFibre YouFibre is a full fibre broadband provider on a mission to bring gigafast broadband speeds to our customers.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 262 contacts → | ||||
Indirect evidence “We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 250 contacts → | ||||
Indirect evidence “Zzoomm is here to build a Full Fibre broadband network in your town; fit for the future, for everyone, right now.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 226 contacts → | ||||
Strong evidence “Founded in 2009, Airband is an independent internet service provider bringing superfast broadband to homes, business and industry in rural and hard-to-reach areas, with a rapidly…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 217 contacts → | ||||
Strong evidence “ASK4: Empowering connected living and working spaces Specialist managed Internet service provider for multi-tenant buildings.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 203 contacts → | ||||
Strong evidence “toob is a full-fibre broadband provider on a mission to bring fast, affordable and reliable internet for homes and businesses across England and Scotland.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 191 contacts → | ||||
Indirect evidence “Welcome to Glide, the UK's leading business broadband provider specialising in hard-to-reach and difficult-to-serve locations.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 190 contacts → | ||||
Indirect evidence “Technetix provides critical broadband infrastructure for network operators globally.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 138 contacts → | ||||
Indirect evidence “Welcome to Nano Fibre UK!” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 134 contacts → | ||||
Indirect evidence “CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 126 contacts → | ||||
Indirect evidence “At Truespeed, we're on a mission to bring ultrafast, full fibre broadband to homes, businesses and communities across the South West.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 124 contacts → | ||||
Indirect evidence “As a UK fibre network provider, we believe that high-speed broadband should be available for everyone.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 122 contacts → | ||||
Indirect evidence “Founded in 1994, Commsworld is a leading UK Telecommunications Network Provider and ISP and supports thousands of the UK’s leading organisations, both in public and private…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 115 contacts → | ||||
Indirect evidence “Sparta Telecom was established in Luton Bedfordshire in 2011.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 99 contacts → | ||||
Indirect evidence “Spitfire Network Services is a UK-based, multi-award winning telecoms and ISP provider for businesses.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 92 contacts → | ||||
Strong evidence “Jurassic Fibre is a Devon based independent telecommunications company taking the internet experience for families and businesses to a whole new level.” Source: RevenueBase Database · checked Sep 6, 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: internet service providers. 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 internet service providers.
- Partial evidence
- Its own public description names part of internet service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name internet service providers. 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 357 internet service providers based in the United Kingdom
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Internet service providers based in the United Kingdom at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 internet service providers, 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 “internet service providers”. 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 internet service providers), 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 internet service providers, 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, 6,660 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 6, 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.
Internet service providers by metro
Frequently asked
How many internet service providers are based in the United Kingdom?
RevenueBase counts 357 internet service providers listed based in the United Kingdom. The directory also includes 20,820 contacts and 6,660 email addresses.
What does an internet service provider do?
An internet service provider delivers internet access to customers through network connections such as fiber, cable, wireless, or satellite. Providers may serve residential, business, government, or institutional customers.
Which city has the most internet service providers in the list?
London is the single most-represented city among the internet service providers on the list. The list was updated in September 2026.
Ready to reach these companies? Verified emails and direct dials for all 357 internet service providers based in the United Kingdom. Start with a free account, no credit card.
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Internet service providers by geography
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- Internet service providers based in Germany
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- Internet service providers based in Australia
- Internet service providers based in the Netherlands
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Internet service providers based in Brazil
- Internet service providers based in the United States
- Internet service providers based in South Africa
- Internet service providers based in Spain
- Internet service providers based in Canada
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Company intelligence · public preview
Top 25 internet service providers 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 357 matching company records for internet service providers based in the United Kingdom, with 20,820 tracked contacts and 6,660 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 6, 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 25 internet service providers 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 |  Virgin Mediavirginmediao2.co.ukHQ: Reading, United KingdomReported employees: 10001+ | Reading, United Kingdom | 10001+ | Exact match | 6,839 contacts → |
“We’re in the process of growing all parts of our business so we can connect more customers to the things and to the people they care about.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Cityfibrecityfibre.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,460 contacts → |
“At CityFibre, we’re building a new, intelligent, open-access fibre network, purpose built for the data age.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Hyperoptichyperoptic.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,295 contacts → |
“Hyperoptic was founded in 2011 to shake up the broadband market, and we're proud to be forever in our customers' corner.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  ZEN Internetzen.co.ukHQ: Rochdale, United KingdomReported employees: 501-1,000 | Rochdale, United Kingdom | 501-1,000 | Exact match | 521 contacts → |
“Zen is a B Corp certified telecommunications and technology service provider in the UK.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Community Fibre Limitedcommunityfibre.co.ukHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 483 contacts → |
“Whichever way you look at it, we are London’s best broadband- London's fastest broadband network - London’s best quality broadband network (Opensignal)*- Which?” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Eunetworkseunetworks.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 362 contacts → |
“euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Fibrusfibrus.comHQ: Belfast, United KingdomReported employees: 201-500 | Belfast, United Kingdom | 201-500 | Exact match | 326 contacts → |
“Our mission is to bring Full Fibre broadband to homes and businesses across Northern Ireland and Great Britain, especially to those who need it most.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  G.Network Communicationsg.networkHQ: West End, United KingdomReported employees: 501-1,000 | West End, United Kingdom | 501-1,000 | Exact match | 310 contacts → |
“When it comes to business, there’s no city like London.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Quickline Communications Limitedquickline.co.ukHQ: Hull, United KingdomReported employees: 201-500 | Hull, United Kingdom | 201-500 | Exact match | 304 contacts → |
“Broadband built for you” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Youfibreyoufibre.comHQ: Uk, United KingdomReported employees: 201-500 | Uk, United Kingdom | 201-500 | Exact match | 278 contacts → |
“Get a better kind of broadband from YouFibre YouFibre is a full fibre broadband provider on a mission to bring gigafast broadband speeds to our customers.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Vorbossvorboss.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 262 contacts → |
“We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Zzoommzzoomm.comHQ: Oxford, United KingdomReported employees: 201-500 | Oxford, United Kingdom | 201-500 | Exact match | 250 contacts → |
“Zzoomm is here to build a Full Fibre broadband network in your town; fit for the future, for everyone, right now.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Airband Community Internetairband.co.ukHQ: Droitwich, United KingdomReported employees: 201-500 | Droitwich, United Kingdom | 201-500 | Exact match | 226 contacts → |
“Founded in 2009, Airband is an independent internet service provider bringing superfast broadband to homes, business and industry in rural and hard-to-reach areas, with a rapidly…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Ask4ask4.comHQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 217 contacts → |
“ASK4: Empowering connected living and working spaces Specialist managed Internet service provider for multi-tenant buildings.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  TOOBtoob.co.ukHQ: Portsmouth, United KingdomReported employees: 201-500 | Portsmouth, United Kingdom | 201-500 | Exact match | 203 contacts → |
“toob is a full-fibre broadband provider on a mission to bring fast, affordable and reliable internet for homes and businesses across England and Scotland.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Glide UKglide.co.ukHQ: Kenn, United KingdomReported employees: 201-500 | Kenn, United Kingdom | 201-500 | Exact match | 191 contacts → |
“Welcome to Glide, the UK's leading business broadband provider specialising in hard-to-reach and difficult-to-serve locations.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Technetixtechnetix.comHQ: Albourne, United KingdomReported employees: 51-200 | Albourne, United Kingdom | 51-200 | Exact match | 190 contacts → |
“Technetix provides critical broadband infrastructure for network operators globally.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Nano Fibre UK Limitednanofibre.co.ukHQ: Bradford, United KingdomReported employees: 201-500 | Bradford, United Kingdom | 201-500 | Exact match | 138 contacts → |
“Welcome to Nano Fibre UK!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Cass Worldwidecassworldwide.comHQ: Snitterfield, United KingdomReported employees: 201-500 | Snitterfield, United Kingdom | 201-500 | Exact match | 134 contacts → |
“CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Truespeedtruespeed.comHQ: Bath, United KingdomReported employees: 51-200 | Bath, United Kingdom | 51-200 | Exact match | 126 contacts → |
“At Truespeed, we're on a mission to bring ultrafast, full fibre broadband to homes, businesses and communities across the South West.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Freedom Fibrefreedomfibre.comHQ: Irlam, United KingdomReported employees: 51-200 | Irlam, United Kingdom | 51-200 | Exact match | 124 contacts → |
“As a UK fibre network provider, we believe that high-speed broadband should be available for everyone.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Commsworldcommsworld.comHQ: Edinburgh, United KingdomReported employees: 51-200 | Edinburgh, United Kingdom | 51-200 | Exact match | 122 contacts → |
“Founded in 1994, Commsworld is a leading UK Telecommunications Network Provider and ISP and supports thousands of the UK’s leading organisations, both in public and private…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Sparta Telecom LTDspartatelecom.comHQ: Luton, United KingdomReported employees: 51-200 | Luton, United Kingdom | 51-200 | Exact match | 115 contacts → |
“Sparta Telecom was established in Luton Bedfordshire in 2011.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Spitfire Network Services LTDspitfire.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 99 contacts → |
“Spitfire Network Services is a UK-based, multi-award winning telecoms and ISP provider for businesses.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Jurassic Fibre Cuckoo Broadbandjurassic-fibre.comHQ: Exeter, United KingdomReported employees: 201-500 | Exeter, United Kingdom | 201-500 | Exact match | 92 contacts → |
“Jurassic Fibre is a Devon based independent telecommunications company taking the internet experience for families and businesses to a whole new level.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 357 company matches
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Internet service providers: dataset insights
September 6, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
355 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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: September 6, 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 ↗
Internet service providers by metro
Questions about this company list
What does Exact match mean for internet service providers?
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 internet service providers did RevenueBase find based in the United Kingdom?
The saved snapshot records 357 matching company records, 20,820 tracked contacts and 6,660 verified emails. The public preview displays 25 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: September 6, 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
Internet service providers by geography
- Internet service providers based in Brazil
- Internet service providers based in the United States
- Internet service providers based in South Africa
- Internet service providers based in Spain
- Internet service providers based in Canada
- Internet service providers based in Italy
- Internet service providers based in Germany
- Internet service providers based in France
- Internet service providers based in Argentina
- Internet service providers based in Poland
- Internet service providers based in Australia
- Internet service providers based in the Netherlands
Cite this list
RevenueBase Data Team. Top 25 internet service providers based in the United Kingdom. Snapshot: September 6, 2026. https://revenuebase.ai/companies/internet-service-providers/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
- Internet service providers based in Brazil
- Internet service providers based in the United States
- Internet service providers based in South Africa
- Internet service providers based in Spain
- Internet service providers based in Canada
- Internet service providers based in Italy
Company intelligence · public preview
Top 25 internet service providers based in the United Kingdom
RevenueBase records 357 matching company records for internet service providers based in the United Kingdom, with 20,820 tracked contacts and 6,660 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 6, 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 25 internet service providers 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 | Virgin Mediavirginmediao2.co.uk HQ: Reading, United KingdomReported employees: 10001+ | Reading, United Kingdom | 10001+ | Exact match | 6,839 contacts → |
“We’re in the process of growing all parts of our business so we can connect more customers to the things and to the people they care about.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Cityfibrecityfibre.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,460 contacts → |
“At CityFibre, we’re building a new, intelligent, open-access fibre network, purpose built for the data age.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Hyperoptichyperoptic.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,295 contacts → |
“Hyperoptic was founded in 2011 to shake up the broadband market, and we're proud to be forever in our customers' corner.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ZEN Internetzen.co.uk HQ: Rochdale, United KingdomReported employees: 501-1,000 | Rochdale, United Kingdom | 501-1,000 | Exact match | 521 contacts → |
“Zen is a B Corp certified telecommunications and technology service provider in the UK.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Community Fibre Limitedcommunityfibre.co.uk HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 483 contacts → |
“Whichever way you look at it, we are London’s best broadband- London's fastest broadband network - London’s best quality broadband network (Opensignal)*- Which?” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Eunetworkseunetworks.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 362 contacts → |
“euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Fibrusfibrus.com HQ: Belfast, United KingdomReported employees: 201-500 | Belfast, United Kingdom | 201-500 | Exact match | 326 contacts → |
“Our mission is to bring Full Fibre broadband to homes and businesses across Northern Ireland and Great Britain, especially to those who need it most.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | G.Network Communicationsg.network HQ: West End, United KingdomReported employees: 501-1,000 | West End, United Kingdom | 501-1,000 | Exact match | 310 contacts → |
“When it comes to business, there’s no city like London.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Quickline Communications Limitedquickline.co.uk HQ: Hull, United KingdomReported employees: 201-500 | Hull, United Kingdom | 201-500 | Exact match | 304 contacts → |
“Broadband built for you” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Youfibreyoufibre.com HQ: Uk, United KingdomReported employees: 201-500 | Uk, United Kingdom | 201-500 | Exact match | 278 contacts → |
“Get a better kind of broadband from YouFibre YouFibre is a full fibre broadband provider on a mission to bring gigafast broadband speeds to our customers.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Vorbossvorboss.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 262 contacts → |
“We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Zzoommzzoomm.com HQ: Oxford, United KingdomReported employees: 201-500 | Oxford, United Kingdom | 201-500 | Exact match | 250 contacts → |
“Zzoomm is here to build a Full Fibre broadband network in your town; fit for the future, for everyone, right now.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Airband Community Internetairband.co.uk HQ: Droitwich, United KingdomReported employees: 201-500 | Droitwich, United Kingdom | 201-500 | Exact match | 226 contacts → |
“Founded in 2009, Airband is an independent internet service provider bringing superfast broadband to homes, business and industry in rural and hard-to-reach areas, with a rapidly…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Ask4ask4.com HQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 217 contacts → |
“ASK4: Empowering connected living and working spaces Specialist managed Internet service provider for multi-tenant buildings.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | TOOBtoob.co.uk HQ: Portsmouth, United KingdomReported employees: 201-500 | Portsmouth, United Kingdom | 201-500 | Exact match | 203 contacts → |
“toob is a full-fibre broadband provider on a mission to bring fast, affordable and reliable internet for homes and businesses across England and Scotland.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Glide UKglide.co.uk HQ: Kenn, United KingdomReported employees: 201-500 | Kenn, United Kingdom | 201-500 | Exact match | 191 contacts → |
“Welcome to Glide, the UK's leading business broadband provider specialising in hard-to-reach and difficult-to-serve locations.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Technetixtechnetix.com HQ: Albourne, United KingdomReported employees: 51-200 | Albourne, United Kingdom | 51-200 | Exact match | 190 contacts → |
“Technetix provides critical broadband infrastructure for network operators globally.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Nano Fibre UK Limitednanofibre.co.uk HQ: Bradford, United KingdomReported employees: 201-500 | Bradford, United Kingdom | 201-500 | Exact match | 138 contacts → |
“Welcome to Nano Fibre UK!” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Cass Worldwidecassworldwide.com HQ: Snitterfield, United KingdomReported employees: 201-500 | Snitterfield, United Kingdom | 201-500 | Exact match | 134 contacts → |
“CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Truespeedtruespeed.com HQ: Bath, United KingdomReported employees: 51-200 | Bath, United Kingdom | 51-200 | Exact match | 126 contacts → |
“At Truespeed, we're on a mission to bring ultrafast, full fibre broadband to homes, businesses and communities across the South West.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Freedom Fibrefreedomfibre.com HQ: Irlam, United KingdomReported employees: 51-200 | Irlam, United Kingdom | 51-200 | Exact match | 124 contacts → |
“As a UK fibre network provider, we believe that high-speed broadband should be available for everyone.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Commsworldcommsworld.com HQ: Edinburgh, United KingdomReported employees: 51-200 | Edinburgh, United Kingdom | 51-200 | Exact match | 122 contacts → |
“Founded in 1994, Commsworld is a leading UK Telecommunications Network Provider and ISP and supports thousands of the UK’s leading organisations, both in public and private…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sparta Telecom LTDspartatelecom.com HQ: Luton, United KingdomReported employees: 51-200 | Luton, United Kingdom | 51-200 | Exact match | 115 contacts → |
“Sparta Telecom was established in Luton Bedfordshire in 2011.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Spitfire Network Services LTDspitfire.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 99 contacts → |
“Spitfire Network Services is a UK-based, multi-award winning telecoms and ISP provider for businesses.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Jurassic Fibre Cuckoo Broadbandjurassic-fibre.com HQ: Exeter, United KingdomReported employees: 201-500 | Exeter, United Kingdom | 201-500 | Exact match | 92 contacts → |
“Jurassic Fibre is a Devon based independent telecommunications company taking the internet experience for families and businesses to a whole new level.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 357 company matches
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Internet service providers: dataset insights
September 6, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
355 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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: September 6, 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 ↗
Internet service providers by metro
Questions about this company list
What does Exact match mean for internet service providers?
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 internet service providers did RevenueBase find based in the United Kingdom?
The saved snapshot records 357 matching company records, 20,820 tracked contacts and 6,660 verified emails. The public preview displays 25 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: September 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 internet service providers based in the United Kingdom. Snapshot: September 6, 2026. https://revenuebase.ai/companies/internet-service-providers/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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