Company lists · Data refreshed September 2026
Top 25 High schools based in the United Kingdom
The RevenueBase directory lists 1,237 high schools based in the United Kingdom, with 33,615 contacts and 10,305 email addresses associated with those organizations. London is the single most-represented city among the companies on the list, and the data is current as of September 2026.
High schools are educational institutions that provide secondary-level instruction to students in the later years of school. This list covers high schools that provide secondary education, including public, private, charter, and independent institutions. Ranked by team size, largest first. Data current as of September 7, 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 high schools based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 292 contacts → | ||||
Indirect evidence “At Epsom we want our pupils to live happy and fulfilled lives.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 2 | 288 contacts → | ||||
Partial evidence “Sevenoaks School (HMC) is a co-educational day and boarding school for pupils aged 11 to 18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 3 | 252 contacts → | ||||
Indirect evidence “Felsted offers boys and girls aged four to eighteen a first class all round education, based on a safe, rural 80 acre village campus in stunning North Essex, only one hour from…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 4 | 224 contacts → | ||||
Partial evidence “Malvern College is a co-educational boarding and day school for pupils aged 13-18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 5 | 209 contacts → | ||||
Partial evidence “A Sunday Times Top 10 Independent School in the UK for students aged 11 - 18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 6 | 208 contacts → | ||||
Partial evidence “The Grange School is a co-educational independent school for 4-18 year olds.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 7 | 200 contacts → | ||||
Partial evidence “Canford is among the top co-educational UK boarding schools for pupils aged 13-18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 8 | 185 contacts → | ||||
Partial evidence “Westminster School's and Westminster Under School's reputations as centres of academic excellence are built upon our pupils’ genuine enjoyment of open-minded enquiry, rigorous…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 9 | 184 contacts → | ||||
Strong evidence “Surbiton High School aims to inspire, encourage and empower its staff and pupils to be the very best they can be.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 10 | 176 contacts → | ||||
Partial evidence “Bancroft’s is an award-winning co-educational HMC day school serving 1,200 pupils aged 7 to 18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 11 | 162 contacts → | ||||
Indirect evidence “Leyton Sixth Form College is a lively, diverse, successful institution located in the London Borough of Waltham Forest.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 12 | 144 contacts → | ||||
Partial evidence “St Edward's, Oxford, is a co-educational boarding and day school for 13-18 years, situated in north Oxford, and affectionately known as Teddies.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 13 | 143 contacts → | ||||
Partial evidence “At Ipswich School we offer a modern education based on over 600 years of sound foundations.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 14 | 139 contacts → | ||||
Partial evidence “Reigate Grammar School is one of the leading co-educational independent schools in the country.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 15 | 134 contacts → | ||||
Partial evidence “Nestled in the picturesque Dorset countryside, Clayesmore is not just a school; it's a vibrant community where students thrive both academically and personally.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 16 | 129 contacts → | ||||
Partial evidence “Sedbergh School is a co-educational boarding school in Sedbergh, Cumbria.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 17 | 129 contacts → | ||||
Partial evidence “Truro School, founded in 1880, is a co-educational independent school located in the beautiful county of Cornwall, providing outstanding education for ages 3 to 18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 18 | 109 contacts → | ||||
Indirect evidence “King's College, Taunton offers an outstanding education for pupils aged 2-18 in the heart of Somerset.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 19 | 106 contacts → | ||||
Partial evidence “At Watford Grammar School for Boys we aim to take every student in our care on a most extraordinary journey, and one which can nurture the talent and provide the skills and…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 20 | 104 contacts → | ||||
Indirect evidence “Paddington Academy is an Outstanding, non-selective academy in inner West London with 1,200 students from ages 11-18.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 21 | 99 contacts → | ||||
Indirect evidence “Lord Grey Academy is a secondary academy based in the heart of Bletchley.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 22 | 98 contacts → | ||||
Partial evidence “King Edward VI is a leading co-educational independent day school for 11 to 18 year olds and was first established in 1553.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 23 | 97 contacts → | ||||
Partial evidence “Ewell Castle School is a happy and successful co-educational independent school in North Surrey, easily accessible from South West London.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 24 | 97 contacts → | ||||
Partial evidence “St Columba’s College is a co-ed independent Catholic day school for ages 4-18, located in beautiful St Albans, Hertfordshire.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 25 | 96 contacts → | ||||
Indirect evidence “A thriving academy at the heart of the community, enabling its pupils to realise their true potential -'Excellence Through Endeavour'.” Source: RevenueBase Database · checked Sep 7, 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: high schools. 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 high schools.
- Partial evidence
- Its own public description names part of high schools, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name high schools. 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 1,237 high schools based in the United Kingdom
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High schools based in the United Kingdom at a glance
As of Sep 7, 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 high schools, 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 “high schools”. 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 high schools), 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 high schools, 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, 10,305 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 7, 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.
High schools by metro
Frequently asked
How many high schools are based in the United Kingdom?
The directory lists 1,237 high schools based in the United Kingdom.
How can I find contacts at high schools?
The directory includes 33,615 contacts and 10,305 email addresses associated with listed high schools.
Which city has the most high schools in the list?
London is the single most-represented city among the companies on the list.
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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.