Company lists · Data verified August 2026

Top 25 Coding assessment and interview platforms based in the United Kingdom

Name: Coding assessment and interview platforms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 82 companies tracked

There are 82 coding assessment and interview platforms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 594 professional contacts across them, including 186 with verified work emails and 51 with mobile numbers. London is the largest hub.

This list covers coding assessment and interview platforms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

82Companies

594Contacts tracked

186Verified emails

51Mobile numbers

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The 25 largest coding assessment and interview platforms based in the United Kingdom

Ranked by team size

Top 25 of 82 coding assessment and interview platforms based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Codility	London	51-200	121	58
2	sapia.ai	London	51-200	57	44
3	Modern Hire	London	201-500	41	1
4	Graduates First JOB Assessment Experts	Huddersfield	11-50	22	6
5	IKM Teckchek	Croydon	11-50	19	7
6	Equitas	Belfast	1-10	18	7
7	Vinter AI Recruitment Platform	London	11-50	18	6
8	Shortlister	York	11-50	11	8
9	Evidenced	London	11-50	11	6
10	shortlist.me	York	11-50	11	5
11	Talent Unlimited	London	1-10	10	4
12	Speedwell Software	Chittering	11-50	9	4
13	Bytehire	Wide	11-50	9	3
14	Assess Candidates	Huddersfield	11-50	8	2
15	Geektastic	London	51-200	7	1
16	Vireup	London	1-10	7	1
17	Sammi Select	Guildford	1-10	6	5
18	Topscore Unseen Group	London	1-10	6	4
19	Assess Management LTD Validateskills.com	Wilts	1-10	5	2
20	accelerate.io	London	1-10	5	2
21	The English Quiz	London	1-10	4	2
22	Talenscio	Redditch	1-10	4	1
23	Canvass	London	1-10	3	2
24	Arkiter	London	1-10	3	1
25	Codedrills	London	1-10	3	1

Showing 25 of 82 coding assessment and interview platforms based in the United Kingdom

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Coding assessment and interview platforms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 57 HQs

51Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Coding assessment and interview platforms by metro

Metro	Companies
Coding assessment and interview platforms in London	57
Coding assessment and interview platforms in York	2
Coding assessment and interview platforms in Belfast	2
Coding assessment and interview platforms in Huddersfield	2
Coding assessment and interview platforms in Oxford	2
Coding assessment and interview platforms in Birmingham	1
Coding assessment and interview platforms in Manchester	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “coding assessment and interview platforms”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many coding assessment and interview platforms are there based in the United Kingdom?

There are 82 coding assessment and interview platforms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Codility, headquartered in London, tops this list with the largest team on record.

Which city has the most coding assessment and interview platforms?

London leads with 57 headquartered companies, followed by York (2) and Belfast (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 186 verified decision-maker contacts tracked across these 82 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Coding assessment and interview platforms by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.