Company lists · Data refreshed September 2026

Top 24 Advisory consulting firms based in Belfast, United Kingdom

Name: Advisory consulting firms based in Belfast, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 46 companies tracked

RevenueBase identified 46 advisory consulting firms headquartered in Belfast, United Kingdom as of September 2026 and tracks 653 professional contacts across them, including 272 with verified work emails. London is the largest hub.

This list covers advisory consulting firms headquartered in Belfast, 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 23, 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 23, 2026 86% judged on-target in blind review

46Companies

653Contacts tracked

272Verified emails

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The 24 largest advisory consulting firms based in Belfast, United Kingdom

Ranked by team size

Top 24 of 46 advisory consulting firms based in Belfast, United Kingdom, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to advisory 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	BDO Northern Ireland	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	51-200	93 contacts →
	Indirect evidence “BDO NI specialises in helping businesses, whether start-ups or multinationals, to grow.” Source: RevenueBase Database · checked Sep 23, 2026
2	Sumer NI	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	51-200	90 contacts →
	Indirect evidence “We are one of the largest accountancy firms in Northern Ireland.” Source: RevenueBase Database · checked Sep 23, 2026
3	HNH Partners	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	50 contacts →
	Partial evidence “Dedicated to delivering excellence in deal advisory, debt advisory, taxation, transaction services and business advisory services.” Source: RevenueBase Database · checked Sep 23, 2026
4	Muldoon	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	37 contacts →
	Indirect evidence “Helping a diverse range of businesses to grow and prosper for many years by allowing them to make informed financial decisions based on sound and timely management information.” Source: RevenueBase Database · checked Sep 23, 2026
5	Full Circle Management Solutions	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	30 contacts →
	Indirect evidence “Full Circle Management Solutions Ltd is one of Northern Ireland's fastest growing management consultancy practices.” Source: RevenueBase Database · checked Sep 23, 2026
6	David Lynas Consulting	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	16 contacts →
	Indirect evidence “Cybersecurity should be integrated cohesively across the enterprise, promoting consistency, scalability, and efficiency.” Source: RevenueBase Database · checked Sep 23, 2026
7	HCA Chartered Accountants	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	14 contacts →
	Partial evidence “HCA Chartered Accountants Limited is an accounting, corporate finance, business recovery and advisory company.” Source: RevenueBase Database · checked Sep 23, 2026
8	Mcilveen Howard LTD	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “We are a firm of Chartered Accountants with our main office based in Belfast and a sub office in Cookstown.” Source: RevenueBase Database · checked Sep 23, 2026
9	YY Group	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “At some point, virtually every company will face a situation where they have no answers to challenging sales performance problems.” Source: RevenueBase Database · checked Sep 23, 2026
10	HNH	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	7 contacts →
	Partial evidence “Dedicated to delivering excellence in deal advisory, debt advisory, taxation, transaction services and business advisory services.” Source: RevenueBase Database · checked Sep 23, 2026
11	Next Level Impact	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	4 contacts →
	Indirect evidence “Our team of dedicated professionals are committed to unleashing the potential of individuals and organisations.” Source: RevenueBase Database · checked Sep 23, 2026
12	Lanyon Group	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	3 contacts →
	Partial evidence “Lanyon is a boutique advisory firm specialising in corporate communications, strategic business marketing consultancy and media relations.” Source: RevenueBase Database · checked Sep 23, 2026
13	Cogent Management Consulting LLP	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	2 contacts →
	Partial evidence “Cogent Management Consulting LLP offers one of the most experienced management consultancy teams on the Island of Ireland.” Source: RevenueBase Database · checked Sep 23, 2026
14	Dougold Partners Limited	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Partial evidence “We provide Corporate Finance and Transaction Advisory Services to a wide range of clients, from smaller owner managed businesses to private equity houses to larger Corporates.” Source: RevenueBase Database · checked Sep 23, 2026
15	ALP Consult LTD	Strong evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Strong evidence “A boutique consulting firm providing compliance, AML, risk management, and business advisory services contact: hello@alpconsulting.uk” Source: RevenueBase Database · checked Sep 23, 2026
16	Roger Kennedy	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Indirect evidence “Your Trusted Adviser from Scale-Up to Exit As a Certified Scaling Up Coach, I work with companies and leadership teams across Northern Ireland and Ireland to help them scale…” Source: RevenueBase Database · checked Sep 23, 2026
17	Ex2 Consultancy	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Partial evidence “We provide a range of business consulting services focussed on mentoring and consultancy.” Source: RevenueBase Database · checked Sep 23, 2026
18	Fairfield Beauchamp	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Indirect evidence “FAIRFIELD BEAUCHAMP is a Management Consultancy helping organisations to solve issues, create value, maximise growth and improve business performance.” Source: RevenueBase Database · checked Sep 23, 2026
19	Calderglen Consulting	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	1 contacts →
	Indirect evidence “Our mission is to unlock sustainable value by empowering people & teams to improve their work through problem solving and coaching.” Source: RevenueBase Database · checked Sep 23, 2026
20	Triterra	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	1 contacts →
	Indirect evidence “Customer expectations and the way that we do businesses is rapidly changing.” Source: RevenueBase Database · checked Sep 23, 2026
21	Performance Stratex	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	1 contacts →
	Indirect evidence “Performance Stratex is your trusted partner for business growth, exit strategy planning and retirement strategy.” Source: RevenueBase Database · checked Sep 23, 2026
22	LMK Advisory LTD	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	1 contacts →
	Partial evidence “LMK Advisory is a leading provider of tailored economic and social professional advisory services to the public, private and third sectors.” Source: RevenueBase Database · checked Sep 23, 2026
23	The Management Consulting Bureau	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	1 contacts →
	Partial evidence “After spending 20 years in consulting working with the Board’s of UK Government Departments and FTSE 100 Businesses I decided to set up The Management Consulting Bureau in 2020 to…” Source: RevenueBase Database · checked Sep 23, 2026
24	The 27.2 Consultancy	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	1 contacts →
	Indirect evidence “The single biggest way to impact an organisation is to focus on leadership development' This sums up what The 27.2 Consultancy is about.” Source: RevenueBase Database · checked Sep 23, 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: advisory 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 advisory consulting firms.
Partial evidence: Its own public description names part of advisory consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory 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 24 of 46 advisory consulting firms based in Belfast, United Kingdom

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Advisory consulting firms based in Belfast, United Kingdom at a glance

As of Sep 23, 2026

41.7%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

8554.3%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for Belfast, so it is reported there. Company counts and contact totals on this page are exact for Belfast, over 46 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 advisory 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 Belfast, United Kingdom whose own description of what they do matches “advisory 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 advisory 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 advisory consulting firms, and records with no verified work email. Companies headquartered outside Belfast 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, 272 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 23, 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.

Advisory consulting firms by metro in the United Kingdom

Advisory consulting firms in London3935
Advisory consulting firms in Manchester206
Advisory consulting firms in Edinburgh106
Advisory consulting firms in Birmingham104
Advisory consulting firms in Glasgow102
Advisory consulting firms in Bristol95
Advisory consulting firms in Leeds87
Advisory consulting firms in Cambridge69
Advisory consulting firms in Oxford59
Advisory consulting firms in Reading51
Advisory consulting firms in Belfast46
Advisory consulting firms in Liverpool46
Advisory consulting firms in Milton Keynes46
Advisory consulting firms in Nottingham44
Advisory consulting firms in Southampton40
Advisory consulting firms in Brighton38
Advisory consulting firms in Cardiff38
Advisory consulting firms in Bath37
Advisory consulting firms in Leicester35
Advisory consulting firms in Sheffield34
Advisory consulting firms in Derby33
Advisory consulting firms in Guildford33
Advisory consulting firms in Northampton30
Advisory consulting firms in Cheltenham29
Advisory consulting firms in Aberdeen27
Advisory consulting firms in Newcastle Upon Tyne27
Advisory consulting firms in Winchester26
Advisory consulting firms in York26
Advisory consulting firms in Bournemouth25
Advisory consulting firms in Watford25

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 advisory 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 advisory consulting firms are there based in Belfast, United Kingdom?

RevenueBase identified 46 advisory consulting firms headquartered in Belfast, 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?

BDO Northern Ireland, headquartered in Belfast, tops this list with the largest team on record.

Which city has the most advisory consulting firms?

London leads with 3935 headquartered companies, followed by Manchester (206) and Edinburgh (106).

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 272 verified decision-maker contacts tracked across these 46 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 23, 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.