Company lists · Data verified August 2026

Top 19 Crowdsourcing platforms based in the United Kingdom

Name: Crowdsourcing 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 88 companies tracked

There are 88 crowdsourcing platforms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,453 professional contacts across them, including 351 with verified work emails and 1,081 with mobile numbers. London is the largest hub.

This list covers crowdsourcing 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.

88Companies

4,453Contacts tracked

351Verified emails

1,081Mobile numbers

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The 19 largest crowdsourcing platforms based in the United Kingdom

Ranked by team size

Top 19 of 88 crowdsourcing 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	ARISE	Toronto	n/a	3,497	280
2	Proteams	London	11-50	38	15
3	Earnflex	London	11-50	36	13
4	Redwigwam	Liverpool	11-50	32	4
5	Brightbox Group	Manchester	51-200	16	12
6	TWINE	Manchester	1-10	14	1
7	SOZIE	London	11-50	13	10
8	Hyperstarter	Avon	1-10	13	1
9	Strange Thoughts	London	1-10	7	3
10	Grafter	London	1-10	7	1
11	Springer	Batheaston Bath	1-10	7	1
12	Talentpools	London	1-10	4	2
13	Atoz Global Asset Services	n/a	11-50	4	1
14	Wavechain	London	1-10	3	1
15	Deliberate Impact LTD	London	1-10	2	2
16	Talmix	London	11-50	2	1
17	Open Agent	London	1-10	2	1
18	Appliant	London	11-50	1	1
19	Olenium	Newcastle	1-10	1	1

Showing 19 of 88 crowdsourcing platforms based in the United Kingdom

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Crowdsourcing platforms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 51 HQs

1,081Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Crowdsourcing platforms by metro

Metro	Companies
Crowdsourcing platforms in London	51
Crowdsourcing platforms in Manchester	7
Crowdsourcing platforms in Glasgow	2
Crowdsourcing platforms in Croydon	2
Crowdsourcing platforms in Leicester	2
Crowdsourcing platforms in Liverpool	2
Crowdsourcing platforms in Cambridge	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 “crowdsourcing 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; 0 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 crowdsourcing platforms are there based in the United Kingdom?

There are 88 crowdsourcing platforms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

ARISE, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most crowdsourcing platforms?

London leads with 51 headquartered companies, followed by Manchester (7) and Glasgow (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 351 verified decision-maker contacts tracked across these 88 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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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.