HMRC Investigations

MJ Kane

MJ is an ACCA and CPFAcct qualified specialist with 15 years of experience dealing with HMRC enquiries, disclosures, and dispute resolution for individuals and SMEs. As the lead at MJ Kane Accountants, he focuses on guiding clients through both routine and high-risk enquires or disclosures.

MJ is typically instructed when clients receive unexpected HMRC contact, multi-year compliance notices, or disclosures. His work typically covers:

• Worldwide Disclosure Facility (WDF) – Typically involving offshore assets, crypto and unpaid corporate taxes.

• Aspect enquiries and compliance checks for VAT, PAYE, Self-Assessment and Corporation Tax

• Alternative Dispute Resolution

• Complex investigations involving international structures and trusts

MJ has resolved enquiries ranging from everyday compliance checks to multi-jurisdictional structures.

Recent representative cases include:

• A 5-year VAT disclosure involving c.£450,000 of under-declared VAT, settled through structured negotiation with penalties significantly reduced.

• A four-year offshore stocks and crypto disclosure of approximately £1.2m, ultimately resolving the matter with tax paid and zero penalties.

• An ADR dispute over input R&D recovery, resolved through negotiated agreement, resulting in a lowered penalty position for the company.

Clients choose MJ for his transparency and ability to take the stress out of HMRC engagement. His goal is simple: “resolve the issue quickly, protect the taxpayer, and leave them in a stronger position going forward”.

Jonathon Greenaway

With 15 years of hands-on experience handling HMRC enquiries and disclosure cases, Jonathon is a key specialist within MJ Kane Accountants. His work centres on helping individuals and SMEs navigate HMRC scrutiny, from initial contact through to full resolution, while keeping the process controlled, transparent and strategically managed.

Jonathon is frequently brought in when clients face sudden or complex HMRC intervention. His portfolio includes:

• Worldwide Disclosure Facility (WDF)

• VAT, PAYE, Self-Assessment and Corporation Tax aspect enquiries and compliance checks

• Alternative Dispute Resolution (ADR) for cases that require structured negotiation

• Let Property Campaign disclosures for landlords with historic rental income issues

Jonathon’s aim is straightforward, secure a fair outcome, minimise penalties, and ensure the client’s position is both accurate and defensible. His experience stretches from single-issue compliance checks to complex investigations.

Notable cases Jonathon has managed include:

• Managed a self-assessment compliance check for a high-net worth individual, successfully justifying all expenditure and avoiding potential adjustments of £20k, despite reluctance from HMRC.

• Completed a 7 year Let Property Campaign Disclosure, ensuring no HMRC penalties were incurred by the client.

• Navigated a detailed payroll compliance check for a retailer with 25 staff, despite persistent HMRC queries, these were resolved with HMRC making no amendments.

Clients rely on Jonathon for his calm, direct communication and his ability to remove the tension from HMRC engagement. His goal is consistent across every case: “deal with the issue quickly, safeguard the taxpayer and ensure their affairs are stronger going forward”.

Gary Craig

Gary has 21 years of experience in tax investigations and dispute resolution.  Gary started his investigation career as a VAT Compliance Officer working on a range of risk-based enquiries.  Gary then moved to direct taxes and completed HMRC training as an Inspector of Taxes and the Tax Specialist Programme.

During his time at HMRC, Gary completed several tax compliance roles that provide him with in-depth working knowledge of Code of Practice 9 and HMRC’s compliance processes and procedures.

The roles include:

• Working Code of Practice 8 and 9 cases as part of HMRC’s Fraud Investigation Services to deal with suspected serious fraud investigations. As a result, Gary has a proven track record working on a range of investigations from small firms to the UK’s largest companies.

• HMRC Product and Policy Owner for Business Profits representing HMRC as an expert witness at criminal and civil enquiries.

• Large Business Customer Compliance Manager working with some of the UK’s largest companies to undertake a range of complex enquiries including transfer pricing, diverted profits and a range of enquiries across corporation tax, income tax, VAT and employer duties.

• Grade 6 Operational Leader for HMRC’s Agent Compliance Team working with tax agents across the UK to undertake a range of compliance enquiries.

Gary is a skilled tax investigator and advocate leading investigations to reach a negotiated settlement and where appropriate to lead cases successfully through the Tax Tribunal process. His accessibility has been a recuring praise from the tax payers whose cases he managed.