Company lists · Data refreshed September 2026

Top 23 Formative assessment software companies based in the United Kingdom

RevenueBase identified 52 formative assessment software companies headquartered in the United Kingdom as of September 2026 and tracks 494 professional contacts across them, including 223 with verified work emails. London is the largest hub.

This list covers formative assessment software companies 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 28, 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 28, 2026 86% judged on-target in blind review
52Companies
494Contacts tracked
223Verified emails
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The 23 largest formative assessment software companies based in the United Kingdom

Ranked by team size
Top 23 of 52 formative assessment software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to formative assessment software companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLondon, United KingdomHQ checked Sep 28, 202651-20093 contacts →

Partial evidence

“CENTURY Tech is an award-winning AI education technology company focused on the learning, teaching and assessment space.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceBrentford, United KingdomHQ checked Sep 28, 2026201-50068 contacts →

Indirect evidence

“GL Education is a global leader in edtech with a clear mission: to accelerate learning for all children and adults of all ability levels and ethnic and social backgrounds…”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceLondon, United KingdomHQ checked Sep 28, 2026201-50063 contacts →

Partial evidence

“GL Assessment is a global leader in education technology with a clear mission: to accelerate learning for all children and adults of all ability levels and ethnic and social…”

Source: RevenueBase Database · checked Sep 28, 2026
4Strong evidenceLondon, United KingdomHQ checked Sep 28, 202611-5031 contacts →

Strong evidence

“Tabbie is a formative assessment platform that provides analytics to drive equitable learning outcomes.”

Source: RevenueBase Database · checked Sep 28, 2026
5Strong evidenceLondon, United KingdomHQ checked Sep 28, 202611-5028 contacts →

Strong evidence

“Doublestruck is a market leader in the educational world, offering hugely popular assessment software in Primary and Secondary schools.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceAbingdon, United KingdomHQ checked Sep 28, 20261,001-5,00017 contacts →

Partial evidence

“Enhancing the role digital assessment solutions play throughout the lifelong learning journey.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceLondon, United KingdomHQ checked Sep 28, 202611-5015 contacts →

Partial evidence

“Zzish is a software company that builds AI data-driven educational software to give teachers superpowers.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceGuildford, United KingdomHQ checked Sep 28, 202611-5014 contacts →

Partial evidence

“The AI Copilot Built for Assessment.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceLondon, United KingdomHQ checked Sep 28, 20261-1011 contacts →

Indirect evidence

“sAInaptic is your reliable co-pilot in marking, feedback and analytics, with accuracy at par with human assessors.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceBrentford, United KingdomHQ checked Sep 28, 2026201-50011 contacts →

Indirect evidence

“Renaissance is a global leader in edtech with a clear mission: to accelerate learning for all children and adults of all ability levels and ethnic and social backgrounds…”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceMayfair, United KingdomHQ checked Sep 28, 202611-5010 contacts →

Indirect evidence

“Performance Learning is scientifically proven to accelerate performance, improve outcomes and nurture wellbeing.”

Source: RevenueBase Database · checked Sep 28, 2026
12Strong evidenceChittering, United KingdomHQ checked Sep 28, 202611-509 contacts →

Strong evidence

“Speedwell’s assessment software allows you to run world-class multiple-choice and practical exams (OSCEs).”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceManchester, United KingdomHQ checked Sep 28, 20261-107 contacts →

Partial evidence

“Mosaic is an edtech platform that- Embeds purposeful and reflective practice within training programmes, while eliminating unnecessary workload - Harnesses the power of formative…”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceReigate, United KingdomHQ checked Sep 28, 202611-507 contacts →

Indirect evidence

“is AI-assisted grading you can trust.”

Source: RevenueBase Database · checked Sep 28, 2026
15Strong evidenceYork, United KingdomHQ checked Sep 28, 20261-106 contacts →

Strong evidence

“TSP provides evidence-based teacher attraction, assessment and development software tools.”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidenceCambridge, United KingdomHQ checked Sep 28, 20261-105 contacts →

Partial evidence

“Developed by University of Cambridge academics, Summatic is an intelligent quantitative learning and assessment platform used by Schools, Colleges and Universities including…”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 28, 20261-105 contacts →

Indirect evidence

“Exaim is exam preparation that actually improves grades.”

Source: RevenueBase Database · checked Sep 28, 2026
18Strong evidenceCornwall, United KingdomHQ checked Sep 28, 20261-105 contacts →

Strong evidence

“Mappix is the friendliest assessment software for schools.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceLondon, United KingdomHQ checked Sep 28, 202611-504 contacts →

Indirect evidence

“Top Marks AI is redefining how schools approach marking, bringing together industry-leading accuracy, pedagogical rigour, and true scalability to create the next generation of AI…”

Source: RevenueBase Database · checked Sep 28, 2026
20Partial evidenceDurham, United KingdomHQ checked Sep 28, 202611-503 contacts →

Partial evidence

“We're an innovative education technology start-up who provide online Comparative Judgement writing assessments for over schools in the UK, US and Australia.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceLondon, United KingdomHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“Vision Marker is the API for AI marking.”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceOxford, United KingdomHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“Disrupting educational assessment with online digital portfolios, feedback and comparative judgement.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidencePortsmouth, United KingdomHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026

Showing 23 of 52 formative assessment software companies based in the United Kingdom

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Formative assessment software companies based in the United Kingdom at a glance

As of Sep 28, 2026
45.1%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
42.3%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
33
11-50
13
51-200
1
201-500
3
1,001-5,000
2

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 52 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 formative assessment software companies, 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 “formative assessment software companies”. 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 formative assessment software companies), 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 formative assessment software companies, 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, 223 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 28, 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.

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 formative assessment software companies, 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 formative assessment software companies are there based in the United Kingdom?

RevenueBase identified 52 formative assessment software companies 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?

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

Which city has the most formative assessment software companies?

London leads with 22 headquartered companies, followed by Brentford (3) and Manchester (3).

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 223 verified decision-maker contacts tracked across these 52 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 28, 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.