Have you received an HMRC Code of Practice 9 (COP9) letter? Our award-winning Tax Disputes and Investigations team can ease the burden by taking responsibility for all communication with HMRC, guiding you through the investigation process, and negotiating any appropriate settlement on your behalf.

Early specialist advice can make a significant difference. We advise individuals facing COP9 investigations and support them throughout the Contractual Disclosure Facility (CDF) process, providing clear, practical guidance at every stage.

Get help today with a free, confidential discussion on +44 (0)20 7710 3389

How we support you through a COP9 investigation

Our Tax Disputes and Investigations team supports you at every stage of a COP9 investigation. We will:

• Advise whether to accept or reject the Contractual Disclosure Facility (CDF)

• Carry out a detailed review of your tax affairs to identify risks and issues

• Develop a clear strategy to bring your affairs up to date

• Prepare and present your disclosure to HMRC

• Manage all HMRC communication and attend meetings on your behalf

• Work to resolve your COP9 investigation efficiently and with minimal disruption

• Negotiate time-to-pay arrangements where required

Our focus is to protect your position and bring the investigation to a resolution as efficiently as possible.

Why choose us for COP9 support

Our team is led by Mark Taylor, a former HMRC Fraud Investigation Service investigator who also advises on COP9 policy. This provides direct insight into how HMRC approaches investigations.

This means you receive advice grounded in how HMRC approaches COP9 investigations in practice, helping you make informed decisions.

• Specialist COP9 and HMRC investigation expertise

• Clear, practical advice focused on outcomes

• Dedicated support from a team focused solely on tax disputes

• Access to wider tax and advisory specialists where needed

• Ability to work alongside your existing accountant or legal advisor

Speak to a COP9 specialist

If you have received a COP9 letter, speak to one of our specialists today.

Free initial discussion, no obligation, and handled in strict confidence.

Call +44 (0)20 7710 3389 or complete the form below.

For a detailed breakdown of the process and common questions, see our COP9 investigation FAQs.