Acumon

What Acumon does

Acumon is a UK-based chartered accountancy firm headquartered in Ealing, West London, providing a full-service portfolio spanning external audit, accounting and bookkeeping, tax advisory, payroll, company secretarial, estate and probate, specialist advisory (M&A, due diligence, valuations, succession planning), and risk and technology assurance services. The firm serves UK businesses ranging from start-ups to large corporations, as well as charities, international groups with UK subsidiaries, and high-net-worth individuals requiring personal tax planning and estate administration.

The firm operates under a time-based professional services pricing model with fees calculated on staff time, skill level, risk, and value of advice, complemented by fixed-fee options for probate. It is registered with the Institute of Chartered Accountants in England and Wales (ICAEW) under Financial Reporting Council (FRC) oversight, holds regulated audit licences for Jersey and the Isle of Man, and employs Responsible Individuals qualified to conduct Public Interest Entity audits. A distinguishing operational feature is its dedicated in-house software development team, established in 2020, which delivers bespoke tools and process automation — a capability uncommon among UK mid-market accountancy firms.

Acumon's growth has been driven by a combination of organic scaling and inorganic moves: turnover increased from £1.2 million in 2019 to approximately £10 million in 2025, with headcount expanding from 16 to over 90 professionals. Strategic acquisitions include the merger with Rutherfords in 2021 and the acquisition of Carter & Coley in 2025. The firm rebranded from Johnsons Chartered Accountants to Acumon in 2025 to reflect its expanded capabilities. The company is privately held with no disclosed external institutional investors.

Name

Acumon

Legal name

Acumon UK Limited

Website

https://acumon.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

51–100 employees

Short description

Acumon is a UK-based chartered accountancy firm in Ealing, London, offering audit, tax, accounts, payroll, advisory, risk & tech assurance, and probate services to UK businesses, charities, international groups, and high-net-worth individuals through a 90+ person team generating nearly £10M in annual revenue.

Ownership category

akta.pro rank

Product category

Chartered Accountancy Services

NAICS

Offices of Certified Public Accountants (541211)

akta.pro primary industry

Fixed Assets Accounting (Capitalization, Depreciation, Asset Register) (BPAAAGAF)

Keywords

• Chartered accountancy services
• Audit and assurance
• Tax advisory
• Payroll management
• Business advisory

Headquarters

HQ city

Ealing

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Professional Accounting Services: Revenue generated from comprehensive accounting, audit, tax advisory, and business consulting services. Fees are computed based on time spent by principals and staff, level of skill and responsibility, importance and value of advice provided, and level of risk. The firm also offers fixed-fee probate services.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Acumon is a full-service UK chartered accountancy firm delivering audit, accounts/bookkeeping, tax advisory, payroll, company secretarial, estate and probate, risk and technology assurance, and specialist advisory services. It serves UK PLCs, limited companies, charities, international subsidiaries, and high-net-worth individuals through a 90+ UK-based professional team with dedicated specialists per engagement.

Product overview

Acumon is a full-service firm of Chartered Accountants providing a comprehensive portfolio of professional services. The firm operates as a single integrated offering rather than a modular platform, with services spanning audit, accounts/bookkeeping, tax advisory, risk and technology assurance, specialist advisory (M&A, valuations, succession), payroll management, business support, company secretarial, estate and probate, and operations. The portfolio is delivered by 90+ UK-based professionals through a service model where each engagement includes dedicated specialists and clear deliverables. The firm also maintains a dedicated software development team (established in 2020) enabling bespoke technology solutions alongside traditional accounting services.

Differentiator

Problem solved

Functional benefit

Products and services

• Audit Services

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Two partnerships are on record, tiered core.

• Carter & ColeycoreStrategic or Co-development Partner · 1 January 2025Acquisition of Carter & Coley in 2025, further strengthening Acumon's capabilities and market presence as part of strategic expansion.
• RutherfordscoreStrategic or Co-development Partner · 1 January 2021Merger of Rutherfords with Johnsons Chartered Accountants (predecessor to Acumon) in 2021, bringing additional expertise and expanding the client base as part of strategic growth.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Saffery Champness: Top-30 UK chartered accountancy firm offering audit, tax, and advisory services with strong HNW and mid-market presence. Direct competitor for similar client profiles and engagement types.
• Azets: UK and Nordics-focused professional services firm built through aggressive M&A roll-up, offering the same core services as Acumon. Highly comparable in growth strategy, scale, and service mix.
• MHA (MacIntyre Hudson): UK mid-tier chartered accountancy and advisory firm of broadly comparable scale and service mix. Competes head-to-head with Acumon for UK mid-market audit, tax, and advisory mandates, and has executed a similar M&A-led growth playbook.
• PKF Smith Cooper: Mid-tier UK accounting and advisory firm competing in similar audit, tax, and business advisory segments. Comparable scale and full-service positioning make it a direct UK mid-market peer.
• Crowe UK: UK member of the Crowe Global network providing audit, tax, and advisory services to mid-market clients. Comparable mid-tier positioning with overlapping service lines and target customer segments.
• Moore Kingston Smith: UK mid-tier chartered accountants with comparable headcount and service breadth spanning audit, tax, advisory, and specialist services. Direct competitor for London and South East mid-market clients.
• K3 Capital Group: UK-listed accountancy and advisory group built primarily through serial acquisitions of mid-tier practices. Comparable M&A-led growth strategy and overlapping service portfolio targeting UK SMEs and owner-managed businesses.

Broad incumbents

• RSM UK: Large UK mid-tier audit, tax, and consulting firm within the RSM Global network. Competes for the same mid-market and PIE clients as Acumon but at meaningfully larger scale.
• Mazars UK: Major UK and global mid-tier audit and advisory firm. Significant overlap with Acumon's audit, tax, and advisory services, particularly in serving mid-market and international subsidiaries of multinational groups.
• BDO UK: One of the UK's largest mid-tier accounting networks, competing across audit, tax, and advisory at greater scale than Acumon. Overlaps in mid-market and PIE audit mandates but serves a broader portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/acumon

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Acumon