Company lists · Data refreshed September 2026

Top 25 Preparatory schools based in the United Kingdom

Name: Preparatory schools based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 852 companies tracked

RevenueBase identified 852 preparatory schools headquartered in the United Kingdom as of September 2026 and tracks 19,164 professional contacts across them, including 5,945 with verified work emails. London is the largest hub.

This list covers preparatory schools headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

852Companies

19,164Contacts tracked

5,945Verified emails

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The 25 largest preparatory schools based in the United Kingdom

Ranked by team size

Top 25 of 852 preparatory schools based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to preparatory schools: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Harrow School	Partial evidence	Harrow On The Hill, United KingdomHQ checked Sep 20, 2026	501-1,000	411 contacts →
	Partial evidence “Harrow School is one of the world’s most well-known schools.” Source: RevenueBase Database · checked Sep 20, 2026
2	Clifton College	Indirect evidence	Bristol, United KingdomHQ checked Sep 20, 2026	501-1,000	349 contacts →
	Indirect evidence “Clifton College offers pupils an all-round education, pastoral care, opportunity for self-discovery, awakening their sense of duty and a thirst for excellence in all that they do…” Source: RevenueBase Database · checked Sep 20, 2026
3	Shrewsbury School	Partial evidence	Shrewsbury, United KingdomHQ checked Sep 20, 2026	201-500	329 contacts →
	Partial evidence “Shrewsbury School was founded by Edward VI by Royal Charter in 1552, and it was identified as one of the ‘Great’ public schools by the Clarendon Commission 1868.” Source: RevenueBase Database · checked Sep 20, 2026
4	Oundle School	Partial evidence	Oundle, United KingdomHQ checked Sep 20, 2026	501-1,000	309 contacts →
	Partial evidence “Oundle School is situated in the quintessentially English market town of Oundle, about 90 miles north of London.” Source: RevenueBase Database · checked Sep 20, 2026
5	Epsom College	Indirect evidence	Epsom, United KingdomHQ checked Sep 20, 2026	201-500	292 contacts →
	Indirect evidence “At Epsom we want our pupils to live happy and fulfilled lives.” Source: RevenueBase Database · checked Sep 20, 2026
6	The King's School, Canterbury	Partial evidence	Canterbury, United KingdomHQ checked Sep 20, 2026	501-1,000	266 contacts →
	Partial evidence “Founded in 597AD, The King’s School is reputedly the oldest school in the world.” Source: RevenueBase Database · checked Sep 20, 2026
7	Bryanston School	Indirect evidence	Blandford, United KingdomHQ checked Sep 20, 2026	201-500	213 contacts →
	Indirect evidence “At Bryanston we aim to develop well-balanced 18-year-olds, ready to go out into the wider world, to lead happy and fulfilling lives and to contribute, positively and generously.” Source: RevenueBase Database · checked Sep 20, 2026
8	Westminster School, London	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	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 20, 2026
9	Surbiton High School	Partial evidence	Kingston Upon Thames, United KingdomHQ checked Sep 20, 2026	201-500	184 contacts →
	Partial 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 20, 2026
10	The Manchester Grammar School	Partial evidence	Manchester, United KingdomHQ checked Sep 20, 2026	201-500	177 contacts →
	Partial evidence “The Manchester Grammar School is one of the nation’s truly great schools.” Source: RevenueBase Database · checked Sep 20, 2026
11	Bolton School	Strong evidence	Bolton, United KingdomHQ checked Sep 20, 2026	201-500	176 contacts →
	Strong evidence “Bolton School provides a first-class education for boys and girls from age 4 to 18 in the co-educational pre-preparatory school, Beech House, and then subsequently in the…” Source: RevenueBase Database · checked Sep 20, 2026
12	George Watson's College	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	201-500	162 contacts →
	Indirect evidence “We provide a world-class education for children and young people from Preschool to Senior 6.” Source: RevenueBase Database · checked Sep 20, 2026
13	Christ's Hospital School	Partial evidence	Horsham, United KingdomHQ checked Sep 20, 2026	201-500	158 contacts →
	Partial evidence “Christ’s Hospital is a remarkable school which offers pupils from all backgrounds the opportunity to achieve their full academic potential and to develop their interests and…” Source: RevenueBase Database · checked Sep 20, 2026
14	Reigate Grammar School	Partial evidence	Reigate, United KingdomHQ checked Sep 20, 2026	51-200	139 contacts →
	Partial evidence “Reigate Grammar School is one of the leading co-educational independent schools in the country.” Source: RevenueBase Database · checked Sep 20, 2026
15	Clayesmore School	Partial evidence	Blandford Forum, United KingdomHQ checked Sep 20, 2026	201-500	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 20, 2026
16	ST Albans High School For Girls	Partial evidence	St Albans, United KingdomHQ checked Sep 20, 2026	51-200	108 contacts →
	Partial evidence “St Albans High School for Girls (STAHS) is an independent day school for girls from the age of 4 to 18.” Source: RevenueBase Database · checked Sep 20, 2026
17	Blundell's School	Partial evidence	Tiverton, United KingdomHQ checked Sep 20, 2026	501-1,000	108 contacts →
	Partial evidence “Blundell’s School is a co-educational independent school for full, weekly and flexi boarding and day pupils from ages 11 to 18.” Source: RevenueBase Database · checked Sep 20, 2026
18	Harrodian	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	107 contacts →
	Partial evidence “Set on a 25-acre riverside estate in Barnes, South West London, Harrodian is a high-achieving independent school for boys and girls aged between 4 and 18 years old.” Source: RevenueBase Database · checked Sep 20, 2026
19	Cokethorpe School	Partial evidence	Witney, United KingdomHQ checked Sep 20, 2026	51-200	105 contacts →
	Partial evidence “At Cokethorpe, we believe that choosing a school is about far more than selecting where a child will learn.” Source: RevenueBase Database · checked Sep 20, 2026
20	Lord Grey Academy	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 20, 2026	51-200	99 contacts →
	Indirect evidence “Lord Grey Academy is a secondary academy based in the heart of Bletchley.” Source: RevenueBase Database · checked Sep 20, 2026
21	Dulwich Prep & Senior	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	98 contacts →
	Partial evidence “Dulwich Prep & Senior is the largest boys’ prep school in the UK, and it is situated in one of the most beautiful parts of the most cosmopolitan city in the world.” Source: RevenueBase Database · checked Sep 20, 2026
22	Ewell Castle School	Partial evidence	Ewell, United KingdomHQ checked Sep 20, 2026	51-200	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 20, 2026
23	Kingsbury High School	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	92 contacts →
	Partial evidence “A great school is a combination of different things.” Source: RevenueBase Database · checked Sep 20, 2026
24	Harris Academy Chobham	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	92 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
25	Eaton House Schools	Partial evidence	Clapham Common, United KingdomHQ checked Sep 20, 2026	51-200	91 contacts →
	Partial evidence “Eaton House Schools embody the principles of excellent teaching, a family atmosphere and strong pastoral care.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: preparatory 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 preparatory schools.
Partial evidence: Its own public description names part of preparatory schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name preparatory 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 852 preparatory schools based in the United Kingdom

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Preparatory schools based in the United Kingdom at a glance

As of Sep 20, 2026

31.0%Verified-email coverage

22.5Average contacts per company

51-200Median size (employees)

14.1%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

171

11-50

242

51-200

350

201-500

501-1,000

1,001-5,000

10001+

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 852 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among preparatory 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 “preparatory 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 preparatory 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 preparatory 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, 5,945 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 20, 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.

Preparatory schools by metro

Preparatory schools in London120

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names preparatory schools, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many preparatory schools are there based in the United Kingdom?

RevenueBase identified 852 preparatory schools headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Harrow School, headquartered in Harrow On The Hill, tops this list with the largest team on record.

Which city has the most preparatory schools?

London leads with 120 headquartered companies, followed by Manchester (20) and Bristol (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,945 verified decision-maker contacts tracked across these 852 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.