Mapus-Smith & Lemmon

What Mapus-Smith & Lemmon does

Mapus-Smith & Lemmon LLP is a privately held UK chartered accountancy firm operating from four offices across Norfolk and Cambridgeshire (King's Lynn, Downham Market, Wisbech, Hunstanton), with roots dating to the 1920s. The firm delivers a comprehensive suite of professional services including statutory audits (ICAEW-authorized), payroll processing (BACS-approved bureau), bookkeeping, business start-up support, and online accountancy services aligned with HMRC Making Tax Digital requirements. Its service portfolio is complemented by specialized tax advisory covering VAT planning, trusts, inheritance tax, capital gains tax, and income tax planning. The firm is structured as a limited liability partnership owned and controlled by seven designated members holding chartered credentials.

The firm's core product architecture is built on integration with leading cloud accounting platforms — Xero, Sage, QuickBooks, KashFlow, and FreeAgent — combined with an IRIS OpenSpace client portal for document exchange and a suite of free online tax calculators (SDLT, VAT, Payroll, Startup, CIS). It has accumulated 30-100+ years of sector-specific expertise across seven verticals: construction, property and landlords, charities, agriculture, medical/healthcare, leisure/tourism/hospitality, and legal/professional services. This vertical specialization is positioned as the primary competitive differentiator alongside deep regional roots.

Commercially, the firm operates a sales-led, bespoke pricing model offering free initial consultations and personalized quotes based on client requirements, with multi-year contract structures and dedicated account managers. Its go-to-market combines physical office presence in East Anglia with digital service delivery for clients nationwide seeking specialized sector expertise. The firm shows no evidence of external funding, private equity involvement, or acquisition activity, and revenue is not publicly disclosed.

Name

Mapus-Smith & Lemmon

Legal name

Mapus-Smith & Lemmon LLP

Website

https://mapus.co.uk

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

51–100 employees

Short description

Mapus-Smith & Lemmon LLP is a privately held UK chartered accountancy firm serving SMBs and individuals across Norfolk and the UK, with seven sector specialisms (construction, property, charities, agriculture, medical, hospitality, legal) and four regional offices.

Ownership category

akta.pro rank

Product category

Accounting Services

NAICS

Accounting, Tax Preparation, Bookkeeping, and Payroll Services (54121), Offices of Certified Public Accountants (541211), Other Accounting Services (541219)

akta.pro primary industry

Accounting & Bookkeeping Services (BPAHABAC)

Keywords

• Accounting services
• Tax advisory
• Payroll processing
• Bookkeeping services
• Audit assurance

Headquarters

HQ city

King's Lynn

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Accounting Services: Ongoing accounting and bookkeeping services for businesses, including annual accounts preparation, compliance work, and financial reporting. Delivered through dedicated accountants with cloud accounting software integration.
2. Payroll Services: Complete payroll processing including BACS payment processing as an approved BACS payroll bureau. Cost-efficient alternative to in-house payroll management.
3. Audit & Assurance: ICAEW authorized audit and assurance review services provided by three dedicated audit partners. Includes statutory audits and voluntary assurance reviews for businesses looking to sell or raise finance.
4. Tax Planning & Compliance: Comprehensive tax services including self-assessment returns, corporation tax, capital gains tax, inheritance tax planning, VAT planning, and income tax planning for both individuals and businesses.
5. VAT Services: VAT registration, returns, flat rate scheme, and specialist VAT advice including property transactions and overseas VAT issues.
6. Business Start-up Services: Support for new businesses including company formation, business structure advice, tax planning, and financial planning from day one.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels8 records

Core offering

Mapus-Smith & Lemmon LLP is an established chartered accountancy firm providing accounting, tax, payroll, audit, and bookkeeping services to small and medium-sized businesses and private individuals. The firm operates from four offices in Norfolk and Cambridgeshire, delivering compliance work and proactive advisory services supported by cloud accounting software integrated with HMRC Making Tax Digital requirements.

Product overview

Mapus-Smith & Lemmon LLP is a professional accounting firm offering a comprehensive suite of accounting, audit, and tax advisory services. The firm's core service portfolio consists of six main offerings: Audits & Assurance Reviews, Payroll Services, Accountancy Services, Business Start-up Services, Bookkeeping, and Online Accountancy Services (cloud-based accounting meeting HMRC Making Tax Digital requirements). These core services are complemented by five specialized tax advisory services covering VAT Planning, Trusts, Inheritance Tax Planning, Capital Gains Tax Planning, and Income Tax Planning. The firm also provides five free online calculators (SDLT, VAT, Payroll, Startup, CIS) for client and prospect use. Client access is facilitated through an online portal integrated with major accounting platforms including Xero, Sage, QuickBooks, KashFlow, IRIS OpenSpace, and FreeAgent. The firm operates across seven industry specialisms: Construction, Property & Landlords, Charities, Agriculture, Medical-Healthcare, Leisure Tourism & Hospitality, and Legal-Professional sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Audits & Assurance Reviews ICAEW-authorised audit and assurance review services that help businesses transform mandatory audits into valuable business tools for risk minimization and financial confidence.
• Payroll Services Cost-efficient payroll management service including BACS processing that frees up time for businesses to focus on growth rather than administrative tasks.
• Accountancy Services Proactive accounting service providing dedicated accountants who work to maximize profits and minimize risks while keeping clients ahead of deadlines and compliant with HMRC legislation.
• Business Start-up Services Comprehensive start-up accounting support including tax planning, cash flow management, bookkeeping, payroll, and business structure advice for new businesses.
• Bookkeeping Outsourced bookkeeping service using client-preferred cloud accounting software (Xero, Sage, QuickBooks, KashFlow) to maintain accurate and current financial records.
• Online Accountancy Services Real-time cloud-based accounting service that meets HMRC Making Tax Digital requirements, enabling access from anywhere with reduced accountant time on annual accounts.
• VAT Planning VAT registration, compliance, Flat Rate Scheme assistance, and specialist advice on property transactions, partial exemption, overseas VAT, and Intrastat reporting.
• Trusts Trust establishment and management services including bare trusts, interest in possession trusts, discretionary trusts, and IHT liability reduction planning.
• Inheritance Tax Planning IHT planning services including estate assessment, residence nil rate band utilization, and gift planning to minimize liabilities for beneficiaries.
• Capital Gains Tax Planning CGT planning and advisory services covering asset disposal relief, rollover relief, incorporation relief, gift hold-over relief, and private residence relief.
• Income Tax Planning Self-assessment tax return preparation and tax planning services including capital equipment purchases, pension contributions, ISA planning, and EIS/VCT investments.
• Client Portal Online client portal providing access to IRIS OpenSpace, QuickBooks, Sage, Xero, and FreeAgent for streamlined accounting and document management.

Quantifiable outcome

• Most businesses fail within first 3 years - proper financial planning and accounting support improves survival odds
• +2 more outcomes

Segments9 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature3 records

Partnerships

Seven partnerships are on record, tiered core and secondary.

• XerocoreTechnology or IntegrationXero is a major cloud accounting software platform integrated into Mapus-Smith & Lemmon's service offering. The firm provides Xero setup, training, and ongoing support as part of their cloud accounting services, enabling real-time financial data access for clients.
• SagecoreTechnology or IntegrationSage accounting software is one of the platforms offered by Mapus-Smith & Lemmon for client bookkeeping and accounting. The firm supports Sage integration and provides expertise in using Sage for business accounting needs.
• QuickBookscoreTechnology or IntegrationQuickBooks cloud accounting software is offered as an option for client bookkeeping services. Mapus-Smith & Lemmon provides QuickBooks implementation and support as part of their online accounting services.
• IRIS OpenSpacecoreTechnology or IntegrationIRIS OpenSpace is used as the firm's client portal for document sharing and communication. This platform enables secure exchange of financial documents between the firm and clients, facilitating efficient service delivery.
• FreeAgentsecondaryTechnology or IntegrationFreeAgent online accounting software is offered as an option for client bookkeeping and accounting services, particularly suited for freelancers and small businesses.
• KashFlowsecondaryTechnology or IntegrationKashFlow UK cloud accounting software is available as an option for clients. The firm supports KashFlow integration for businesses seeking cloud-based accounting solutions.
• BACS Approved BureaucoreTechnology or IntegrationAs an approved BACS payroll bureau, Mapus-Smith & Lemmon can process actual BACS payments as part of their comprehensive payroll service, removing the need for clients to process payroll sums for employees themselves.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Lovewell Blake: East Anglia-based chartered accountancy firm with multiple offices across Norfolk and Suffolk offering accounting, audit, tax, and payroll services to SMEs, with similar sector specialisms. Directly comparable in size, regional focus, and service mix to Mapus-Smith & Lemmon.
• Larking Gowen: Top-100 UK chartered accountancy firm headquartered in Norfolk with multiple East Anglia offices. Offers a comparable full-service accountancy, audit, and tax advisory platform to SMEs and individuals in the same regional market.
• Ensors Accountants: East Anglia-based chartered accountancy firm with offices in Suffolk, Norfolk, and Cambridgeshire providing accounting, tax, audit, and business advisory services. Closely comparable in regional footprint, headcount, and service portfolio.
• Whitings LLP: East Anglia-headquartered chartered accountancy firm with multiple regional offices offering accounting, audit, tax, and advisory services. Directly comparable in regional focus, client segments, and chartered partnership structure.

Broad incumbents

• PKF Francis Clark: Large South West and London chartered accountancy firm with broader UK presence offering full-service accounting, tax, audit, and advisory. Comparable service mix but larger scale and broader geographic coverage than Mapus-Smith & Lemmon.
• Bishop Fleming: Top-30 UK chartered accountancy firm with multiple offices across the South West and Wales. Comparable in offering accounting, audit, tax, and advisory to SMEs with sector specialisms, but at meaningfully larger scale than Mapus-Smith & Lemmon.
• MHA (UK): UK Top-20 accountancy network of independent member firms offering accounting, audit, tax, and advisory. Overlaps with Mapus-Smith & Lemmon in serving regional SMEs but operates at significantly larger aggregated scale.
• BDO UK: Top-5 UK accounting and advisory firm serving mid-market and large SMEs with full audit, tax, and consulting capabilities. Comparable service categories but at much larger scale; competes for the same growing East Anglia mid-market clients.

Others

• Xero: Cloud accounting platform and technology partner that Mapus-Smith & Lemmon resells and supports. Not a direct competitor but a key ecosystem dependency whose pricing, product roadmap, and AI automation could materially impact the firm's economics.
• TaxCalc: UK tax compliance and practice management software provider widely used by regional accountancy firms. Ecosystem enabler rather than competitor; relevant as a comparable technology supplier for SME accounting workflows.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/MSL_Accountants
• Facebookfacebook.com/MapusSmithandLemmon
• LinkedInlinkedin.com/company/mapus-smith-&-lemmon-llp

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 Mapus-Smith & Lemmon