Company lists · Data refreshed September 2026

Top 25 Api architecture consulting firms based in the United Kingdom

Name: Api architecture consulting 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 27, 2026 80 companies tracked

RevenueBase identified 80 api architecture consulting firms headquartered in the United Kingdom as of September 2026 and tracks 501 professional contacts across them, including 230 with verified work emails. London is the largest hub.

This list covers api architecture consulting 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 27, 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 27, 2026 86% judged on-target in blind review

80Companies

501Contacts tracked

230Verified emails

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The 25 largest api architecture consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 80 api architecture consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to api architecture consulting 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	Neosalpha Technologies	Partial evidence	Maidenhead, United KingdomHQ checked Sep 27, 2026	51-200	97 contacts →
	Partial evidence “NeosAlpha: Your Trusted Partner in IT Consulting and Digital Transformation Founded in the UK in 2017, NeosAlpha is a niche IT consulting and services company, that delivers…” Source: RevenueBase Database · checked Sep 27, 2026
2	Integrella	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	82 contacts →
	Indirect evidence “Integrella is a specialist IT services company with extensive experience across UK sectors.” Source: RevenueBase Database · checked Sep 27, 2026
3	Pace Integration	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	47 contacts →
	Partial evidence “Pace Integration is a unique technology consultancy that solves your integration challenge – focused on enterprise systems integration strategy, architecture and design that is…” Source: RevenueBase Database · checked Sep 27, 2026
4	BML	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	18 contacts →
	Indirect evidence “Release the full power of your business Are you preparing for a sale, modernising core systems or building capabilities to make your strategy stick?” Source: RevenueBase Database · checked Sep 27, 2026
5	Konvergent	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	14 contacts →
	Indirect evidence “At Konvergent, we do two things really well: We can ensure you are making the best technology investment decisions We have the best architects, for your company Strategic…” Source: RevenueBase Database · checked Sep 27, 2026
6	Magna Software	Partial evidence	Belfast, United KingdomHQ checked Sep 27, 2026	1-10	11 contacts →
	Partial evidence “A collective of brilliant and dedicated minds providing next-generation digital services and consulting.” Source: RevenueBase Database · checked Sep 27, 2026
7	Digital Transformation & Integration Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 27, 2026	1-10	11 contacts →
	Indirect evidence “DTI is a transformation consultancy working at the intersection of organisational strategy and technology.” Source: RevenueBase Database · checked Sep 27, 2026
8	Quadcorps LTD	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	10 contacts →
	Partial evidence “Your trusted partner for API and Integration Ecosystem transformations - Military precision, expertly executed."We believe that what is expected of your systems integrator is…” Source: RevenueBase Database · checked Sep 27, 2026
9	Intelance	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	9 contacts →
	Partial evidence “Intelance is a specialist advisory and assurance firm for enterprise architecture, cybersecurity, and AI strategy and governance.” Source: RevenueBase Database · checked Sep 27, 2026
10	Rare Earth Digital	Partial evidence	Nantwich, United KingdomHQ checked Sep 27, 2026	11-50	7 contacts →
	Partial evidence “Rare Earth Digital helps organisations modernise and optimise their technology through smart integrations, APIs, automation, cloud solutions, and custom software that actually…” Source: RevenueBase Database · checked Sep 27, 2026
11	Lekman Consulting	Strong evidence	Hitchin, United KingdomHQ checked Sep 27, 2026	1-10	5 contacts →
	Strong evidence “We offer consulting services in architecture planning and design, software engineering, deployment planning services, project management and marketing.” Source: RevenueBase Database · checked Sep 27, 2026
12	Voquis	Partial evidence	Winchester, United KingdomHQ checked Sep 27, 2026	1-10	5 contacts →
	Partial evidence “Software development and technical architecture consultancy.” Source: RevenueBase Database · checked Sep 27, 2026
13	Imorphr	Partial evidence	Southampton, United KingdomHQ checked Sep 27, 2026	1-10	3 contacts →
	Partial evidence “Software Architecture: Whether you already have a plan or just a problem you want to solve, we’ll help you expand your idea and choose the right technologies and solutions.” Source: RevenueBase Database · checked Sep 27, 2026
14	Vanestum Consulting Limited	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Strong evidence “At Vanestum Consulting, we specialise in delivering bespoke.NET software solutions and cloud architecture, helping businesses harness technology to achieve operational excellence.” Source: RevenueBase Database · checked Sep 27, 2026
15	Dotelastic	Indirect evidence	Winchester, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
16	Evelors	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	2 contacts →
	Partial evidence “Evelors is an international consulting firm with a presence in the UK, EU, Canada and Switzerland.” Source: RevenueBase Database · checked Sep 27, 2026
17	Wheeve	Indirect evidence	Watford, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “Integration is about much more than just technology.” Source: RevenueBase Database · checked Sep 27, 2026
18	Ibctec	Indirect evidence	Edgware, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “Software solution services.” Source: RevenueBase Database · checked Sep 27, 2026
19	Pasilda	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Partial evidence “Pasilda is a London based software and web development business with a focus on systems consulting.” Source: RevenueBase Database · checked Sep 27, 2026
20	Purple Bytes Limited	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Partial evidence “We are technology consultancy who help our clients to build digital products, services and new age business model through effective adoption of IDM, API economy and Cloud…” Source: RevenueBase Database · checked Sep 27, 2026
21	Parse Systems Limited	Indirect evidence	Leicestershire, United KingdomHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “With more than 30 years experience in software, systems design and IT management I believe I have the diversity of experience to help your business.” Source: RevenueBase Database · checked Sep 27, 2026
22	Datuza Technology Consulting LTD	Strong evidence	Chislehurst, United KingdomHQ checked Sep 27, 2026	1-10	1 contacts →
	Strong evidence “Consulting Services specializing in Enterprise and Data Architecture, Data Startegy, Data Engineering and Solution Designs” Source: RevenueBase Database · checked Sep 27, 2026
23	Kalipro Software Consultancy Limited	Indirect evidence	Reading, United KingdomHQ checked Sep 27, 2026	1-10	1 contacts →
	Indirect evidence “Building innovative products that makes a difference for customers.” Source: RevenueBase Database · checked Sep 27, 2026
24	Devign LTD	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 27, 2026	1-10	1 contacts →
	Partial evidence “Devign Ltd is a Solution Architecture, Software Design and and Development consultancy.” Source: RevenueBase Database · checked Sep 27, 2026
25	Usual Expat Limited	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	1 contacts →
	Strong evidence “Delivering specialized consulting in software development and integration, with a focus on Azure.NET, and bespoke API solutions for diverse third-party systems,” Source: RevenueBase Database · checked Sep 27, 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: api architecture consulting 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 api architecture consulting firms.
Partial evidence: Its own public description names part of api architecture consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name api architecture consulting 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 80 api architecture consulting firms based in the United Kingdom

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Api architecture consulting firms based in the United Kingdom at a glance

As of Sep 27, 2026

45.9%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

37.5%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 80 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 api architecture consulting 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 “api architecture consulting 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 api architecture consulting 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 api architecture consulting 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, 230 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 27, 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.

Api architecture consulting firms by metro

Api architecture consulting firms in London30

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 api architecture consulting 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 api architecture consulting firms are there based in the United Kingdom?

RevenueBase identified 80 api architecture consulting 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?

Neosalpha Technologies, headquartered in Maidenhead, tops this list with the largest team on record.

Which city has the most api architecture consulting firms?

London leads with 30 headquartered companies, followed by Manchester (3) and Camberley (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 230 verified decision-maker contacts tracked across these 80 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 27, 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.