Grant Thornton Channel Islands

What Grant Thornton Channel Islands does

Grant Thornton Channel Islands is a privately held professional services firm operating in Jersey and Guernsey under the Grant Thornton International Limited (GTIL) member-firm network. Founded in 2007, the firm is headquartered at Kensington Chambers, St Helier, Jersey, with a second office at St James Place, St Peter Port, Guernsey. It delivers a full-service portfolio across audit and assurance, tax (personal, corporate, QI compliance, and Jersey tax returns), business advisory (including ESG and finance industry services), recovery and reorganisation (corporate insolvency, simplification, debt advisory, restructuring), forensic and investigation services, financial reporting advisory, and business risk services. Client segments span financial services (funds, insurance, fiduciaries, fund administrators), high net worth individuals, public companies, owner-managed businesses, and troubled businesses requiring restructuring.

The firm operates under a time-based hourly billing model on monthly invoicing cycles, with services delivered through partner-led engagements. It participates in the Grant Thornton Advisors multinational platform, backed by New Mountain Capital (~$55B AUM), which expanded from 14 to 18 firms worldwide during 2025-2026 with additions including Poland, Brazil, Puerto Rico, and Denmark. The Channel Islands practice comprises multiple legal entities (Grant Thornton Limited Jersey, Grant Thornton Advisors Limited Guernsey, Grant Thornton Holdings Limited, Grant Thornton Services Jersey/Guernsey, LSI Secretaires Limited, LSI Nominees Limited, Castle Nominees Limited) providing bundled corporate secretarial, nominee, and trust services alongside core professional services. Distribution leverages the 150+ market GTIL network for cross-border engagements.

The leadership team comprises Managing Partner Adam Budworth plus roughly ten partners across audit, tax, and recovery, supported by a deep associate director bench. Notable recognition includes Andrea Harris's appointment as President of INSOL International effective 1 July 2026 (the first Grant Thornton and first Channel Islands President). Technology deployment is centred on professional services delivery with AI-assisted tools reviewed by professionals; no proprietary AI products or APIs are disclosed. Marketing relies on thought leadership (IFRS updates, tax alerts, ESG publications), industry events, and partner-led client engagement rather than paid acquisition.

Name

Grant Thornton Channel Islands

Legal name

Grant Thornton Channel Islands (comprising Grant Thornton Limited, LSI Secretaires Limited, and Grant Thornton Advisors Limited collectively)

Website

https://grantthorntonci.com

Company type

Private

Founded year

2007

Operating status

Operating

Short description

Grant Thornton Channel Islands is a Jersey- and Guernsey-based member firm of Grant Thornton International providing audit, tax, advisory, recovery and reorganisation, and forensic services to financial services clients, public companies, high net worth individuals, and owner-managed businesses across the Channel Islands.

Ownership category

akta.pro rank

Product category

Professional Services - Audit, Tax & Advisory

NAICS

Offices of Certified Public Accountants (541211)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS) (BPAHABAF)

akta.pro secondary industry

Strategic Partnerships, Alliances & JVs Advisory (BPAHADAI)

Keywords

• Audit and assurance
• Tax advisory services
• Corporate restructuring
• Forensic investigation
• Business advisory

Headquarters

HQ city

St. Helier

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Audit and Assurance Services: Audit services for a wide range of clients and their financial stakeholders, from fast growing and established businesses to public companies competing in global markets.
2. Tax Services: Tax advisory and compliance services for individuals and businesses, including personal tax, corporate tax, and international tax matters.
3. Business Advisory Services: Advisory services including ESG, professional services, finance industry services, and local business advisory.
4. Recovery and Reorganisation: Corporate insolvency, corporate simplification, debt advisory, exit strategy services, financial restructuring, and strategic performance reviews.
5. Forensic and Investigation Services: Forensic accounting, fraud investigations, and investigation services for clients.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Grant Thornton Channel Islands provides a full range of professional services through its Jersey and Guernsey offices, including audit and assurance, tax advisory and compliance, business advisory (covering ESG, finance industry and local businesses), recovery and reorganisation, forensic and investigation services, financial reporting advisory, and business risk services. Engagements are delivered by partners, directors and qualified staff to clients ranging from individuals and owner-managed businesses to public companies and regulated financial services entities operating in global markets.

Product overview

Grant Thornton Channel Islands offers a full range of professional services through its Jersey and Guernsey offices. The portfolio consists of core service lines including Audit, Tax, Business Advisory Services, Recovery & Reorganisation, Forensic & Investigation Services, Financial Reporting Advisory Group, and Business Risk Services. These services are delivered to a wide range of clients from individuals and local businesses to international corporations and public companies. The firm operates as part of the Grant Thornton International network spanning over 150 markets globally.

Differentiator

Problem solved

Functional benefit

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Ten partnerships are on record, tiered minor and core.

• The Fund FoundryminorStrategic or Co-development Partner · 18 May 2026Grant Thornton is a service provider sponsor for The Fund Foundry programme, providing audit services to emerging fund managers selected for the programme. A 12-month structured programme supporting first-time and emerging fund managers with £25,000 service vouchers per cohort member.
• Walkers (law firm)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• Bedell Cristin (law firm)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• Carey Olsen (law firm)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• Mourant (law firm)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• Ogier (law firm)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• Stephenson Harwood (law firm)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• JTC (fund administrator)minorOthers · 18 May 2026Service provider sponsor for The Fund Foundry programme.
• Grant Thornton International LimitedcoreStrategic or Co-development Partner · 18 May 2026GTIL is the global network organization. Grant Thornton Channel Islands is a member firm. GTIL and member firms are separate legal entities providing services to clients.
• Guernsey Financial Services CommissionminorOthers · 18 May 2026Regulator providing fast-track PIF registration pathway for The Fund Foundry programme participants.

Scale indicators2 records

Recent moves11 records

Expansion highlights6 records

Direct peers

• KPMG (Channel Islands): Big Four firm operating locally in the Channel Islands; one of the four direct competitors in audit, tax and advisory for the same financial services and corporate client base.
• Deloitte (Channel Islands): The Big Four audit, tax and advisory firm with offices in Jersey and Guernsey serving the same investment funds, insurance, fiduciary and public-company clients as Grant Thornton Channel Islands — its most directly comparable competitor across all core service lines.
• PwC (Channel Islands): Big Four firm operating in Jersey and Guernsey; competes head-to-head with Grant Thornton Channel Islands for audit, tax and advisory mandates across regulated financial services and owner-managed businesses.
• EY (Channel Islands): Big Four firm with Channel Islands presence; directly competes with Grant Thornton CI in audit, tax, and advisory services to funds, insurers and fiduciaries headquartered in Jersey and Guernsey.
• RSM (Channel Islands): Global mid-tier audit, tax and consulting network with Channel Islands presence; targets the same mid-market owner-managed and financial services segments as Grant Thornton Channel Islands.
• BDO (Channel Islands): Top global mid-tier accounting network with a Channel Islands office; closest like-for-like peer to Grant Thornton within the mid-tier segment, serving similar mid-market and financial-services clients.
• Moore Global (Channel Islands): International accounting and advisory network with a Channel Islands member firm; comparable to Grant Thornton CI as a mid-tier alternative serving SMEs, owner-managed businesses and local financial services.
• Baker Tilly (Channel Islands): Global mid-tier accounting network with Channel Islands operations; directly comparable to Grant Thornton CI across audit, tax, and advisory for owner-managed businesses and financial services clients.
• Mazars (Channel Islands): International mid-tier accounting and advisory firm with Channel Islands operations; competes directly with Grant Thornton CI for owner-managed businesses, funds and HNW tax clients.
• Crowe (Channel Islands): Global top-10 accounting network with Channel Islands presence; competes with Grant Thornton CI in audit, tax and advisory for mid-market financial services and corporate clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/grantthorntonchannelislands

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles30 records

Subsidiaries5 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 Grant Thornton Channel Islands