Company lists · Data refreshed September 2026

Top 25 Web3 development firms based in the United Kingdom

Name: Web3 development firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 237 companies tracked

RevenueBase identified 237 web3 development firms headquartered in the United Kingdom as of September 2026 and tracks 1,827 professional contacts across them, including 565 with verified work emails. London is the largest hub.

This list covers web3 development firms 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 22, 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 22, 2026 86% judged on-target in blind review

237Companies

1,827Contacts tracked

565Verified emails

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The 25 largest web3 development firms based in the United Kingdom

Ranked by team size

Top 25 of 237 web3 development firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to web3 development firms: 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	Nethermind	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	263 contacts →
	Partial evidence “Nethermind has a world class team of builders and researchers with expertise in Ethereum, protocol engineering, layer 2 scaling, decentralized finance, smart contracts development…” Source: RevenueBase Database · checked Sep 22, 2026
2	Parity Technologies	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	218 contacts →
	Indirect evidence “Parity was founded by a visionary group of blockchain pioneers, including Dr.” Source: RevenueBase Database · checked Sep 22, 2026
3	Tech Alchemy	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	136 contacts →
	Indirect evidence “We’re Tech Alchemy, a London-based team of product people.” Source: RevenueBase Database · checked Sep 22, 2026
4	Primafelicitas	Strong evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	92 contacts →
	Strong evidence “Started in 2013 with offices in San Francisco, London, and Delhi, PrimaFelicitas is a bleeding-edge Custom Software development company at the forefront of core end-to-end Web3…” Source: RevenueBase Database · checked Sep 22, 2026
5	Plexus Resource Solutions	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	75 contacts →
	Partial evidence “Since 2017, we’ve been helping Web3 founders build teams fast.” Source: RevenueBase Database · checked Sep 22, 2026
6	Blockmob Labs	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	46 contacts →
	Partial evidence “Blockmob Labs is a full-stack product engineering studio building production-grade software across Web3, AI, fintech, SaaS, mobile, and cloud infrastructure.” Source: RevenueBase Database · checked Sep 22, 2026
7	Trikon	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	39 contacts →
	Indirect evidence “At Trikon, we’re reimagining blockchain technology for a world that demands simplicity, accessibility, and innovation.” Source: RevenueBase Database · checked Sep 22, 2026
8	Trackgenesis	Partial evidence	Aberdeen, United KingdomHQ checked Sep 22, 2026	11-50	24 contacts →
	Partial evidence “TrackGenesis is an Aberdeen-based software development company helping startups, SMEs, and enterprises across Scotland and the UK navigate digital transformation.” Source: RevenueBase Database · checked Sep 22, 2026
9	Impax Recruitment	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	23 contacts →
	Partial evidence “Since 2021, Impax Recruitment has been the go-to talent partner for companies at the frontier of Web3, blockchain, and artificial intelligence (AI).” Source: RevenueBase Database · checked Sep 22, 2026
10	Vortex Foundation	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	20 contacts →
	Indirect evidence “We offer real and transparent solutions for both early-stage ventures and already established projects.” Source: RevenueBase Database · checked Sep 22, 2026
11	ANSG	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	20 contacts →
	Partial evidence “ANSG: Turning Visions into Reality in the Web3 World At ANSG, we specialise in transforming visions into reality in the dynamic Web3 ecosystem.” Source: RevenueBase Database · checked Sep 22, 2026
12	Web3 Labs	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	16 contacts →
	Partial evidence “Web3 Labs is a leading blockchain technology firm specialising in decentralised infrastructure solutions.” Source: RevenueBase Database · checked Sep 22, 2026
13	LKI Consulting	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	16 contacts →
	Partial evidence “LKI Consulting is an award-winning Web3 advisory firm that helps crypto projects launch tokens, grow communities, acquire users, increase TVL, and boost awareness.” Source: RevenueBase Database · checked Sep 22, 2026
14	Calyptus	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	13 contacts →
	Partial evidence “Calyptus is Web3's leading employment platform helping builders get hired 3x faster.” Source: RevenueBase Database · checked Sep 22, 2026
15	Appold	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “Appold is an independent, award-winning blockchain advisory firm supporting financial institutions, asset managers, listed companies and blockchain-native organisations.” Source: RevenueBase Database · checked Sep 22, 2026
16	Etherspot	Strong evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	11 contacts →
	Strong evidence “Etherspot is a multi-chain ERC-4337 development platform that provides solutions for any Web3 project to deliver frictionless Web3 UX by removing usability pain points.” Source: RevenueBase Database · checked Sep 22, 2026
17	OFF The Chain	Indirect evidence	Liverpool, United KingdomHQ checked Sep 22, 2026	1-10	11 contacts →
	Indirect evidence “Creating a space for the movers and shakers of cryptocurrency, the future of finance.” Source: RevenueBase Database · checked Sep 22, 2026
18	Argedor Information Technologies	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “ARGEDOR is a London-based technology company that specializes in providing innovative and advanced blockchain solutions to businesses and end-users.” Source: RevenueBase Database · checked Sep 22, 2026
19	Benco Services	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “Benco Services is a Web3 exclusive social media management and marketing agency.” Source: RevenueBase Database · checked Sep 22, 2026
20	Dentoro Lumiere	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “We're a software engineering company with experience in building world-scale products.” Source: RevenueBase Database · checked Sep 22, 2026
21	Blokpoint	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “We are Blokpoint, a Web3 Marketing Agency based in the UK, helping world-wide crypto and blockchain projects launch, grow, and scale in a fast-moving digital landscape.” Source: RevenueBase Database · checked Sep 22, 2026
22	AVARK	Partial evidence	Manchester, United KingdomHQ checked Sep 22, 2026	11-50	8 contacts →
	Partial evidence “After 3 years as Sequence, we are now Avark: Your Web3 Design Agency.” Source: RevenueBase Database · checked Sep 22, 2026
23	Chainnodes	Indirect evidence	Web3, United KingdomHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
24	AVARA	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	8 contacts →
	Partial evidence “Avara is a software technology company, renowned for building innovative web3 products based on blockchain technologies.” Source: RevenueBase Database · checked Sep 22, 2026
25	Arkn Ventures	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “A Blockchain Advisory Service; facilitating the creation of Web 3.0.” Source: RevenueBase Database · checked Sep 22, 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: web3 development firms. 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 web3 development firms.
Partial evidence: Its own public description names part of web3 development firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name web3 development firms. 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 237 web3 development firms based in the United Kingdom

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Web3 development firms based in the United Kingdom at a glance

As of Sep 22, 2026

30.9%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

71.3%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

142

11-50

51-200

201-500

1,001-5,000

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 237 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 web3 development firms, 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 “web3 development firms”. 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 web3 development firms), 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 web3 development firms, 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, 565 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 22, 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.

Web3 development firms by metro

Web3 development firms in London169

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 web3 development firms, 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 web3 development firms are there based in the United Kingdom?

RevenueBase identified 237 web3 development firms 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?

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

Which city has the most web3 development firms?

London leads with 169 headquartered companies, followed by Manchester (8) and Glasgow (4).

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 565 verified decision-maker contacts tracked across these 237 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 22, 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.