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Island Graph/All niches/Professional Services

Business Consultants

49 active businessesCompare

Twenty-nine consultancies — all four Big Four (EY, PwC, KPMG, Deloitte) alongside BDO and Baker Tilly. Practices weight toward compliance and risk: 15 cite risk management, 13 compliance advisory, 10 governance advisory. Clients skew regulated — 17 serve SMEs, 17 regulated business, 16 financial services. Twenty-one sit in St Peter Port. —

Founded between 1900 and 2023

28 of 49 have a recorded year
190019251950197520002025
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BDO Limited

St Peter Port·Professional Service

Part of BDO International (166 countries, 1800 offices, 119,611 people, US$15 billion global revenue)

✦Most experience: 125+ years

126-year heritage (1900)

GFSCbdobusinesses of all sizesindividual clientsmid tier networkaccessible entrance

Chartered accountancy and advisory firm with 48 qualified accountants and 21 trainees, specialising in audit, tax, and corporate finance in St Peter Port.

Phone+441481724561
Webbdo.gg
Emailenquiries@bdo.gg

Horsepool Consulting Limited

St Peter Port·Professional Service·Est. 2021

Part of Square Clouds, TCS, Verify by Tiller, Abe Ltd

GFSCindependentregulated advisoryregulated firmsfinancial servicesregulated business

Guernsey AML and regulatory compliance consultancy, trading as Horsepool Group, offering outsourced compliance services and training.

Phone+441481740458
Webhorsepool.gg
Emailhello@horsepool.gg

KPMG in the Crown Dependencies

St Peter Port·Professional Service·Est. 1987

Part of KPMG International Limited

GFSCkpmgPartnershipbig four advisoryinvestment fundnetwork member firm

Professional services partnership offering audit, tax, and advisory services across the Crown Dependencies.

Phone+441481721000
Webkpmg.com/dp/en/home.html
Emailcrowndependencies@kpmg.com

Baker Tilly CI Audit Limited

St Sampson·Professional Service·Est. 1994

Part of Baker Tilly Channel Islands Limited

GFSCICAEWbaker tillyBaker Tilly Internationalmid tier networkinternational corporatesinvestment fund

GFSC-registered chartered accountancy and audit firm in St Sampson, part of Baker Tilly International.

Phone+441481245244
Webbakertilly.je
Emailmail@bakertilly.je

Bridgewater Limited

St Peter Port·Professional Service·Est. 2005

GFSCAATcorporate businessespartnershipstrustsprivate clientindependent advisory

AAT Licensed Accountant (Licence No. 634) and GFSC Registered Prescribed Business, offering accountancy, taxation, and business consultancy in St Peter Port.

Phone+441481722221
Webwww.bridgewater.co.gg
Emailadmin@bridgewater.co.gg

DNA Ltd

St Sampson·Professional Service·Est. 2014

ACCAICAEWirisxeroprivate clientindependent advisorylimited company

Professional firm offering accounting, tax, and business consultancy services, specialising in cloud accounting solutions as a Xero Platinum Partner.

Phone+441481254748
Webdna.gg
Emailhello@dna.gg

Ernst & Young LLP

St Peter Port·Professional Service

Part of Ernst & Young Global Limited

GFSCICAEWbusiness owning familiesprivate capital investorsllpinternational corporatesbig four advisory

The Guernsey branch of EY, a Big Four professional services firm offering assurance, consulting, tax, and strategy and transactions services from St Peter Port.

Phone+441481717400
Webey.com
Emaileychannelislands@uk.ey.com

Evans Bond Limited

St Martin·Professional Service

GFSCACCAprivate clientaccessible parkinghni individualindependent advisoryregulated firms

Guernsey-registered chartered accountancy and business advisory firm in St Martin, specialising in bookkeeping, tax compliance, and CFO services for SMEs and regulated businesses.

Phone+441481710899
Webevansbond.com
Emailcontact@evansbond.com

Island Global Research

St Peter Port·Professional Service

Part of BWCI Group (since 2015)

ISO 27001ISO 9001corporate sectorcaptive consultancy armprivate sectorpublic sectorsmes

Full-service market research agency specialising in Jersey, Guernsey, and the Isle of Man, part of the BWCI Group since 2015.

Phone+441481716227
Webislandglobalresearch.com
Emailinfo@islandglobalresearch.com

The Bottom Line

St Peter Port·Professional Service

Part of In association with MWB Consultants Limited

ACCAICAEWxeroindependent advisorysmeslimited company

Chartered certified accountancy firm trading as TBL Limited, offering accounting, tax, payroll, and cloud accounting services.

Phone+441481711099
Webasgill4.wixsite.com/thebottomline
Emailadmin@tbl.co.gg

PwC Channel Islands

St Peter Port·Professional Service

Part of PwC (PricewaterhouseCoopers International Limited)

✦Largest team: 501-1,000 (Channel Islands)

103-year heritage (1923)

GFSCpwcaccessible entrancebig four advisoryinvestment fundnetwork member firm

Big Four professional services firm offering audit, tax, and advisory services across the Channel Islands.

Phone+441481752000
Webpwc.com/jg/en.html

AP Group Ltd.

St Peter Port·Professional Service·Est. 1990

employersjob seekersindependent advisorybailiwick widelimited company

Guernsey-founded recruitment and business services group offering executive search, staffing, payroll, and HR across 11 global offices.

Phone+441481715757
Webwww.apgroupglobal.com
Emailinfo@apgroupglobal.com

Aspida Management Services Limited

St Peter Port·Service·Est. 2001

Part of Aspida Group Limited

captive consultancy armcorporate clientmaltathird sectorboutique compliance

Aspida Management Services Limited offers compliance, risk management, and corporate governance services as part of the Aspida Group.

Phone+441481812400
Webaspidagroup.com
Emailinfo@aspidagroup.com

Aspida Group Limited

St Peter Port·Professional Service

maltaboutique complianceaccessible entrancecharityguernsey

Provider of technology-driven governance, risk, and compliance solutions for regulated businesses in financial services and the third sector.

Phone+441481812400
Webaspidagroup.com
Emailinfo@aspidagroup.com

Sigma Group

Vale·Professional Service

managed services provideraccessible parkingindependent advisoryregulated firmsbailiwick wide

Business solutions provider with over 90 years of experience in the Channel Islands and the Isle of Man, offering IT and payroll services.

Phone+441481241111
Websigmaci.com
Emailteam@sigmaci.com

Asset Risk Consultants Ltd

St Peter Port·Professional Service·Est. 1995

Part of ARC Group Limited

GFSCwealth adviserscharityhni individualindependent advisoryregulated business

Asset Risk Consultants Ltd (ARC) is a Guernsey-headquartered investment consultancy providing performance monitoring, manager research, and advisory services to family offices, charities, and professional advisers.

Phone+441481817777
Webassetrisk.com
Emailinfo@assetrisk.com

Lilley & Co. Ltd

St Pierre du Bois·Professional Service·Est. 2015

Part of LMJ Group

ICAEWfreeagentquickbookssageirisxero

Chartered accountancy firm in St Pierre du Bois offering accounting, tax, payroll, and business advisory services.

Phone+441481700582
Weblilleyandco.gg
Emailenquiries@lilleyandco.net

Redwood Group

St Peter Port·Professional Service·Est. 2016

GFSCbelgiumcompanyfundsinternational groupireland

Grant Thornton International member firm established in 2016, specialising in AML, KYC, compliance, and corporate governance advisory services across Guernsey, Jersey, and Ireland.

Phone+441481701950
Webredwoodgrouplimited.com
Emailcontactus@redwoodgrouplimited.com

Solve Limited

St Peter Port·Professional Service

GFSCguernseyregulated advisorylimited companyregulated business

Professional firm offering restructuring and liquidation services, including solvent winding-up and Independent Business Reviews in St Peter Port.

Phone+447839106789
Websolvegroup.gg
Emailrestructuring@solvegroup.gg

FWS Ltd

St Andrew·Professional Service·Est. 2000

private sectorthird sectorboutique consultancycharitypublic sector

FWS Ltd provides event management, administration, marketing, and company secretarial services to Channel Islands charities, non-profits, and committees.

Phone+447781423842
Webfws.gg
Emailellie@fws.gg

Premier Compliance

St Peter Port·Professional Service·Est. 2022

boutique complianceindependent advisoryregulated firmsfinancial servicessmes

Independent compliance consultancy serving Guernsey's financial services firms and SMEs.

Phone+447781100246
Webpremiercompliance.gg
Emailinfo@premiercompliance.gg

ThreeSixty

St Martin·Professional Service·Est. 2023

ex regulator consultancyboutique consultancyregulated advisoryregulated firmsfinancial services

Guernsey compliance consultancy, founded in 2023 by former GFSC senior managers, offering supervised roles, AML/CFT/CPF training, compliance audits, and corporate governance advisory.

Phone+447781163727
Webthreesixty.gg
Emailenquiries@threesixty.gg

Deloitte LLP

St Peter Port·Professional Service

Part of Deloitte Touche Tohmatsu Limited (DTTL) via Deloitte North South Europe (NSE)

businessesdeloittellppartnershipaccessible entrance

Big Four professional services firm with a branch in St Peter Port, delivering audit, tax, financial advisory, and consulting services.

Phone+441481724011
Webdeloitte.com/uk/en/what-we-do/regions/guernsey.html
Emailguernsey@deloitte.co.uk

East Harbour Associates Limited

St Peter Port·Professional Service

international corporatespublic sectorindependent advisoryregulated firmsbailiwick wide

Multidisciplinary group delivering AI-enabled solutions and resources for growth, compliance, and security in the Crown Dependencies.

Phone+441481712826
Webeast-harbour.com
Emailinfo@east-harbour.com

Jason Powers Consultants Limited

St Peter Port·Professional Service

construction consultancycontractorsdevelopersfellow professionalsinvestors

Construction and property consultancy established in 2009, offering project management, quantity surveying, cost consultancy, and employer's agent services.

Phone+441481723119
Webjpcl.co.uk
Emailcontact@jpcl.co.uk

ONYX Solutions Limited

St Sampson·Professional Service

regulated advisoryfinancial servicesbailiwick wideregulated businesslimited company

Professional firm offering outsourced compliance services and software solutions to regulated financial services firms in St Sampson.

Phone+44 (0)7781146626
Webonyxcompliance.gg
Emailcontact@onyxsolutions.gg

Vega Technology

St Peter Port·Service

specialist consultancyboutique consultancyaccessible parkinghni individualbailiwick wide

Guernsey-headquartered FinTech and RegTech software company established in 1996, providing solutions to financial services clients in over 20 jurisdictions.

Phone+441481721031
Webvegatechnology.com
Emailenquiry@vegatechnology.com

North Sound Advisors

St Andrew·Organization

Abu Dhabi ADGMBVICaymanCrypto and Web3 clientsDubai DIFC

Limited company specialising in offshore insolvency and restructuring, providing independent and non-executive directors and managing mergers and acquisitions processes.

Phone+447839284610
Webwww.northsoundadvisors.com

Hanois Management Ltd

St Peter Port·Organization·Est. 2008

GFSClimited company

GFSC Primary Licensee providing fiduciary services, including company formation and administration, and maritime employment services.

Phone+441481712269
Webhanoismanagement.com

Advisory Services Group Limited

St Peter Port·Professional Service

GFSClimited company

Provider of compliance, risk and regulatory, company secretarial, corporate governance, consultancy, and training services.

Phone+447781127922
Webadvisoryservices.gg
Emailmel@advisoryservices.gg

Focus HR Solutions

St Peter Port·Professional Service

Part of Focus Group (umbrella for Focus HR Solutions and Focus Consulting)

boutique consultancybailiwick widesmeslimited company

CIPD and PRISM Accredited HR and payroll consultancy established in 2014, offering executive coaching and regulatory compliance training.

Phone+441481728824
Webfocushrs.com
Emailadmin@focushrs.com

Triangle Compliance Services

Alderney·Organization

charities and NPOsnon-regulated businessesprescribed businesses

Alderney-based sole practitioner consultancy specialising in anti-money laundering and countering the financing of terrorism (AML/CFT).

Phone+447781432424
Webwww.gov.gg
Emaildawntindall@gmail.com

Bachmann Group

St Peter Port·Organization

✦Active since 1974

boutique specialist

ISO 9001 certified and provides offshore employment services, payroll administration, personnel management, and corporate ownership for the marine, aviation, and offshore industries.

Phone+447781404821
Webwww.bachmanngroup.com
Emailport.agent@bachmanngroup.com

Black Arrow Cyber Consulting

St Peter Port·Organization·Est. 2019

specialist consultancylimited company

Specialist consultancy established in 2019, providing cyber and information security services including penetration testing and cyber incident response exercises.

Phone+441481711988
Webwww.blackarrowcyber.com
Emailcontact@blackarrowcyber.com

Duke Capital Limited

St Peter Port·Organization

Europe and North Americalimited company

Company incorporated in Guernsey in 2012 and licensed by the GFSC as a financial firm business with lending as its permitted activity.

Phone+441481231816
Webdukecapital.com/contact

Maroon Consulting

Vale·Organization·Est. 2021

or onsite at the client

Data-informed business change consultant specialising in high-risk projects and complex transformation programmes, with nearly 30 years of delivery experience.

Phone+447781444323
Webwww.maroonconsult.com
Emailhello@maroonconsult.com

Clive and Associates Limited

St Peter Port·Organization·Est. 2012

limited company

Business advisory and consulting services company with operations in Guernsey and Harare, Zimbabwe, registered with the GFSC as a Prescribed Business – Accountant.

Phone+447911723883
Webwww.cliveandassociates.com

Teneo

St Peter Port·Organization

Grenville StreetSt Helier

Corporate services firm specialising in insolvency, investigations, regulation, and transactions across the Crown Dependencies for investment management and private wealth sectors.

Phone+443305881920

Business Office Services International

St Peter Port·Organization

accessible 24/7

Provider of fully equipped private, cubicle, and flexible offices, plus meeting rooms for international businesses in St Peter Port.

Phone+441481742250
Webwww.bos-international.com

MPEQ

St Peter Port·Organization

limited company

Limited company providing research and management consultancy services to private equity firms making direct equity investments in Turkey, Eastern Europe, and surrounding regions.

Webwww.mpeq.co.uk
Emailinfo@mpeq.co.uk

CBO Projects

St Peter Port·Organization·Est. 2011

Business consultancy established in 2011, an APM Corporate Partner, providing project services, business analysis, and independent assurance.

Phone+441481729161
Webwww.cboprojects.com
Emailcoffee@cboprojects.com

Concept 360 Guernsey

St Peter Port·Organization·Est. 2017

Project management organisation established in 2017, offering six service lines including Construction, Electrical, Windows & Doors, Plumbing, Plant, and Interiors.

Phone+441481736360
Webwww.concept360gsy.com
Emailaccounts@concept360gsy.com

Cybernetic Controls

Castel·Organization·Est. 2020

Company offering AI governance frameworks, AI risk management services, and specialist staffing for AI, DevOps, and regulatory roles.

Phone+441481248223
Webwww.cybernetic-controls.com
Emailinfo@cybernetic-controls.com

Midshore Consulting Limited

St Sampson·Organization·Est. 2016

Business consultancy specialising in domestic, cross-border, and international financial services regulation, offering advisory, tax, and training services.

Phone+441481730733
Webwww.midshoreconsulting.com
Emailenquiries@midshoreconsulting.com

Oceanskies Limited

St Peter Port·Organization·Est. 2013

Business consultancy specialising in yacht and aircraft registration, including on Guernsey's 2-REG, and yacht crew employment, HR, and payroll administration services.

Phone+441481711994
Webwww.oceanskies.com
Emailhello@oceanskies.com

PlanB

St Sampson·Organization·Est. 2005

Business consultancy established in 2005, offering architectural design, structural engineering, contract administration, and project management for construction projects.

Phone+441481244726
Webwww.planb.gg
Emailinfo@planb.gg

UN1TY

St Peter Port·Organization·Est. 2022

Guernsey non-cellular company offering fractional advisory services in technology, marketing, sustainability, and project management, with in-house Non-Domestic and Domestic Energy Assessors.

Phone+447781144144
Webwww.un1ty.gg
Emailinfo@un1ty.gg

Alter Domus

St Peter Port·Organization·Est. 2008

GFSC Investment Licensee and fiduciary Primary Licensee providing fund administration for alternative investment funds across infrastructure, real estate, private equity, and debt.

Phone+441481742250
Webalterdomus.com

Calligo

St Peter Port·Organization

IT consultancy with ISO 27001 information security certification and a SOC 2 Type 2 report covering the UK, Channel Islands, Ireland, Canada and the US.

Phone+443301242090
Webwww.calligo.io
Emailguernsey@calligo.io

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