Company lists · Data refreshed September 2026

Top 25 Blockchain software development companies based in London, United Kingdom

Name: Blockchain software development companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 158 companies tracked

RevenueBase identified 158 blockchain software development companies headquartered in London, United Kingdom as of September 2026 and tracks 1,446 professional contacts across them, including 404 with verified work emails and 61 with mobile numbers. London is the largest hub.

This list covers blockchain software development companies headquartered in London, 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

158Companies

1,446Contacts tracked

404Verified emails

61Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest blockchain software development companies based in London, United Kingdom

Ranked by team size

Top 25 of 158 blockchain software development companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to blockchain software development 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Nethermind	Partial evidence	London, United Kingdom	201-500	261 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 2, 2026
2	Webbylab	Indirect evidence	London, United Kingdom	51-200	104 contacts →
	Indirect evidence “Since 2011, we’ve been developing client-driven solutions by integrating cutting-edge combinations of the newest IT technology with efficient processes.” Source: RevenueBase Database · checked Sep 2, 2026
3	Primafelicitas	Strong evidence	London, United Kingdom	51-200	90 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 2, 2026
4	Applied Blockchain	Strong evidence	London, United Kingdom	51-200	76 contacts →
	Strong evidence “Applied Blockchain is a specialised development studio advising and delivering blockchain and privacy solutions tailored to a company's specific needs.” Source: RevenueBase Database · checked Sep 2, 2026
5	Ment Tech	Partial evidence	London, United Kingdom	51-200	74 contacts →
	Partial evidence “World Leading Blockchain Products & Services Provider.” Source: RevenueBase Database · checked Sep 2, 2026
6	PEIKO	Indirect evidence	London, United Kingdom	51-200	74 contacts →
	Indirect evidence “Peiko is a company that develops the most demanding and technically complex web projects, enhancing products for all major IT markets in the world.” Source: RevenueBase Database · checked Sep 2, 2026
7	Smart Sight Innovations	Indirect evidence	London, United Kingdom	51-200	65 contacts →
	Indirect evidence “Smart Sight Innovations (SSI) is an agile, progressive IT company with a workforce being tech-savvy, updated, upgraded, and innovative company.” Source: RevenueBase Database · checked Sep 2, 2026
8	EXYTE	Indirect evidence	London, United Kingdom	11-50	57 contacts →
	Indirect evidence “We are a team of developers and designers.” Source: RevenueBase Database · checked Sep 2, 2026
9	DLT Apps	Indirect evidence	London, United Kingdom	51-200	50 contacts →
	Indirect evidence “We are an innovative engineering team, focused on transforming financial services globally.” Source: RevenueBase Database · checked Sep 2, 2026
10	CML Team LTD	Partial evidence	London, United Kingdom	11-50	38 contacts →
	Partial evidence “We are a professional team of senior software engineers with more than 10 years of experience in Java, Web, and Mobile technology stacks.” Source: RevenueBase Database · checked Sep 2, 2026
11	Gattaca	Indirect evidence	London, United Kingdom	11-50	19 contacts →
	Indirect evidence “Gattaca is a venture-backed crypto research and technology company.” Source: RevenueBase Database · checked Sep 2, 2026
12	Web3 Labs	Partial evidence	London, United Kingdom	11-50	17 contacts →
	Partial evidence “Web3 Labs is a leading blockchain technology firm specialising in decentralised infrastructure solutions.” Source: RevenueBase Database · checked Sep 2, 2026
13	Kodelab	Indirect evidence	London, United Kingdom	11-50	16 contacts →
	Indirect evidence “At KodeLab, we believe in shaping the future with the right understanding and technological edge, leading companies towards unprecedented success.” Source: RevenueBase Database · checked Sep 2, 2026
14	Blockchain Reply	Partial evidence	London, United Kingdom	1,001-5,000	15 contacts →
	Partial evidence “Reply has pioneered the application of blockchain technology and created a group of specialized analysts, consultants and techie people able to support the Fintech industry…” Source: RevenueBase Database · checked Sep 2, 2026
15	Coinsetters Web3	Indirect evidence	London, United Kingdom	11-50	14 contacts →
	Indirect evidence “Coinsetters is a financial consulting company founded in March 2022 that has quickly become a trusted partner for over 45 major projects in the crypto industry and beyond.” Source: RevenueBase Database · checked Sep 2, 2026
16	COSX	Indirect evidence	London, United Kingdom	11-50	13 contacts →
	Indirect evidence “At CosX, we use AI and new-age technology to drive business transformation.” Source: RevenueBase Database · checked Sep 2, 2026
17	AVARA	Strong evidence	London, United Kingdom	51-200	10 contacts →
	Strong evidence “Avara is a software technology company, renowned for building innovative web3 products based on blockchain technologies.” Source: RevenueBase Database · checked Sep 2, 2026
18	Dentoro Lumiere	Partial evidence	London, United Kingdom	11-50	10 contacts →
	Partial evidence “We're a software engineering company with experience in building world-scale products.” Source: RevenueBase Database · checked Sep 2, 2026
19	Ondemandworld 点应科技	Partial evidence	London, United Kingdom	11-50	6 contacts →
	Partial evidence “New Blockchain and AI based solution coming in 2024 AssetTech – Tokenisation Solution based on ERC-1400 STO standard with public and private Ethereum-based chain support Niftnack…” Source: RevenueBase Database · checked Sep 2, 2026
20	Coinque Consulting	Partial evidence	London, United Kingdom	11-50	5 contacts →
	Partial evidence “CoinQue has a strong understanding of how Blockchain and Cryptocurrency or any other domain works in blockchain technology companies.” Source: RevenueBase Database · checked Sep 2, 2026
21	Horizont Labs	Strong evidence	London, United Kingdom	11-50	5 contacts →
	Strong evidence “Horizont Labs is a software development company based in London.” Source: RevenueBase Database · checked Sep 2, 2026
22	TECXA	Indirect evidence	London, United Kingdom	11-50	5 contacts →
	Indirect evidence “TECXA is a forward-thinking cybersecurity, artificial intelligence, and digital trust consulting firm delivering strategic security solutions for modern enterprises, financial…” Source: RevenueBase Database · checked Sep 2, 2026
23	Buckchaf	Partial evidence	London, United Kingdom	11-50	5 contacts →
	Partial evidence “Engage in Blockchain with ease” Source: RevenueBase Database · checked Sep 2, 2026
24	Cynopia LTD	Strong evidence	London, United Kingdom	11-50	4 contacts →
	Strong evidence “CYNOPIA LTD is a full-spectrum Web3 actionable consulting firm (business consulting, software development, customers engagement) that helps brands and manufacturers to lower…” Source: RevenueBase Database · checked Sep 2, 2026
25	Itealist	Partial evidence	London, United Kingdom	51-200	3 contacts →
	Partial evidence “We are a leading provider of software services, helping businesses bring their innovative ideas to life.” Source: RevenueBase Database · checked Sep 2, 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: blockchain software development companies. 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 blockchain software development companies.
Partial evidence: Its own public description names part of blockchain software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name blockchain software development companies. 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 158 blockchain software development companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 404 reachable decision-makers.

Free signup · no credit card

View the full list →

Blockchain software development companies based in London, United Kingdom at a glance

As of Sep 2, 2026

27.9%Verified-email coverage

4.2%Mobile-number coverage

9.2Average contacts per company

1-10Median size (employees)

110.1%Largest-city concentration · London

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 blockchain software development 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 London, United Kingdom whose own description of what they do matches “blockchain software development 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 blockchain software development 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 blockchain software development companies, and records with no verified work email. Companies headquartered outside London 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, 404 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 2, 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.

Blockchain software development companies by metro in the United Kingdom

Blockchain software development companies in London174

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 blockchain software development 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 blockchain software development companies are there based in London, United Kingdom?

RevenueBase identified 158 blockchain software development companies headquartered in London, 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 blockchain software development companies?

London leads with 174 headquartered companies, followed by Manchester (8) and Glasgow (5).

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 404 verified decision-maker contacts tracked across these 158 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 2, 2026.

Ready to reach these companies? Verified emails and direct dials for all 158 blockchain software development companies based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Blockchain software development companies by geography

Browse the directory

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.