Specialists in Code of practice 8 & 9 Tax Investigations

Our Tax planning tools will save you Thousands

Forensic Accountancy services by Experts

Welcome to Churchill Tax

Tax investigation services

We appreciate that every tax investigation is different and we tailor our approach based on the individual circumstances surrounding each investigation in order to provide the best possible service for our clients.

Complex Tax investigations 

We understands that Tax Investigations can be very stressful and time consuming. Our Tax Investigations Team aims to provide you with specialist advice to minimise the stress and anxiety that an HMRC investigation may cause. Getting the right advice by an expert is  absolute key in achieving the best outcome.

Code of Practice 8 investigations (COP8)

HMRC issues Tax investigation under Code of Practice 8 or COP 8 when they suspect a large amount of tax has been underpaid by an individual. Code of Practice 8 investigation are used in cases where Code of Practice 9 or Contractual Disclosure Facility is not used. Code of Practice 8 is normally issued to individuals where HMRC believe they have used a tax avoidance scheme or have deliberately under declared their income or if they wish to challenge tax planning you have implemented

Code of Practice 9 investigations (COP9)

Code of Practice 9 or COP 9 is a formal investigation into serious tax fraud. It is also known as Contractual Disclosure Facility or CDF. HMRC usually start a Code of Practice 9 or COP 9 investigation when they suspect serious tax fraud. HMRC give you the opportunity to make a full disclosure of underpaid tax under the Contractual Disclosure Facility. There is a strong chance of prosecution and imprisonment if this investigation is not handled carefully or a full disclosure is not made. The first step is to accept that there has been undeclared tax and to provide an outline disclosure to HMRC. If the outline disclosure is accepted, the full disclosure report is then submitted after agreeing a timeline and approach with HMRC. This type of investigation can go back up to 20 years.

Initiate a chat with us

We offer a confidential, ‘no obligation’ initial meeting, so please get in touch.

what we offer

We are one of the UK’s leading tax specialists and tax advice firm providing a high standard of service to all our clients tailoring our services to meet the needs and requirements of individual and businesses.


We understand requirements

We are amongst the UK's leading Tax specialists with a wealth of experience. We provide professional firms, individuals and privately owned businesses with a comprehensive range of specialist tax & advisory support across all of the major taxes.


We work precisely

When appointing a Tax specialist to act on your behalf, it’s important to know that you’re in good hands. You need to know that the advisor you appoint has the experience, skills and courage required to achieve the best possible outcome.


We deliver best output

Our role is as much about supporting our clients personally as it is about providing professional and effective Tax representation. This is why we have implemented facilities such as flexible payment options , that aim to make the process straight forward and stress free.

Our specialisation

Tax Advice

We are one of the UK’s leading Tax advice specialists. Our staff includes qualified Chartered Tax Advisers, Ex- HMRC Senior Tax Inspectors and Barristers and key individual who previously worked in top 10 Accountancy firms. Our services include Tax Planning, Complex Tax Investigations, Forensic Accounting and First & Second Tier Tribunal Services 

360-degree Tax Planning

We will cover CGT, Inheritance Tax, Corporation Tax , VAT, Income Tax, Protection & control of family assets and minor children,  Will provisions, Living Power of Attorney, Corporate structuring & Restructuring and HMRC Clearances and Rulings. By appointing our firm you will receive the best Tax Planning advice from Uk’s leading Tax specialists.   

inheritance Tax Advice

Churchill Tax are one of the UK’s leading Inheritance Tax Specialists and Consultants. Our team of inheritance tax specialists cover Trust tax advice and planning, Family home, Investment properties, Companies, business and shares, Offshore assets and Domicile and residence

Worldwide Disclosure

Churchill Tax team has the experience and the knowledge which means that we are able to handle any size or type of voluntary or prompted disclosure of undeclared income. Our track record is that 100% of our disclosures through Worldwide Disclosure Facility or other disclosure routes such as Let Property Campaign etc have been successful and fully accepted by HMRC.

Forensic Accountancy

We have over 130 years of combined experience in providing high quality Forensic accounting services. We are able to provide you with  Company/ partnership fraud investigations, Commercial disputes, Asset & funds tracing, Business valuations, divorce settlement and expert witness reports. Contact the team to find out more today.

Tax Investigations

We understands that Tax Investigations can be very stressful and time consuming. Our Tax Investigations Team aims to provide you with specialist advice to minimise the stress and anxiety that an HMRC investigation may cause. Getting the right advice by an expert is  absolute key in achieving the best outcome. We specialise in all type of Complex Tax Investigations.

code of Practice 8

Have you received a letter from HMRC stating that you’re being investigated under Code of Practice 8? If yes, this is a very serious tax investigation and needs to be taken seriously. You should contact a Code of Practice 8 investigation specialist as early as possible.

Code of Practice 9

HMRC considers these cases to be very serious, and as a result the consequences can be highly damaging for the taxpayer. Most accountancy practices have little or no experience in dealing with this type of case. It is therefore very important that you seek specialist advice from a suitably qualified tax investigations practitioner to ensure that matters are dealt with appropriately.

Tribunal Services

Churchill Tax are a specialist firm of tax advisors who have experience in resolving the most complex HMRC investigations. We have considerable expertise in dealing with tax tribunals and appeals and we aim to bring all issues to a swift resolution

Whats included

It’s important you make a good connection with your consultant. Your consultant  will become an extension of your business, working with you and for you.

We provide comprehensive services to individuals, businesses and companies. Our relationship with you and your Consultant is built on trust and mutual respect. We will always give you an honest appraisal of your position, including potential fees, whether it is favourable or not. Our team is accessible and approachable, and ready to answer your questions, giving you the confidence you need when dealing with a sensitive issue such as an HMRC enquiry or other tax dispute.

Our initial free consultation allows us to get to know each other and for us to understand your challenges. We’ll also explain how we think we can make a difference. Here’s what you should expect in your initial consultation.

You will be listened to

You will understand the Map ahead

You will know about costs involved

You will find out what our experts can do for you 

You will know exactly what can be done


Book a FREE Consultation

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How it works

Book a FREE consultation

Give us a call on 0333-577-0829.

Our advisers are available Mon-Fri 9am to 5pm.  

Initial phone consultation

Our advisers will recommend the best options based on your specific needs. We have over 130 years of combined experience meaning your  case will be dealt with professionally and to a high standard.

Recommend Options

Our role is as much about supporting our clients personally as it is about providing professional and effective tax representation. This is why we will provide the best possible solutions tailored to meet your case specific needs. 

what our Clients say

“I came to Churchill Tax at a time when my case had been ongoing for several years and many advisers had failed me. Churchill Tax were able to fully understand my case and made very strong representation on my behalf. When Churchill Tax took over the case, I had a significant tax liability. In the end, they were able to close my case with no tax to pay; an outcome that seemed impossible at one stage. Throughout this process, Churchill Tax have been professional, diligent and very understanding of my circumstances. I wish I had appointed them much earlier. I would highly recommend everyone to use Churchill Tax.”

S ch

“I had approached Churchill after my previous accountant had messed up my accounts, VAT and self assessment for the past 3 years. I am very pleased with the way Churchill have handled my case, they have been very professional and have explained to me each aspect of the tax problem and kept me updated throughout the process. I would like to thank the compliance team who have supported me through this.”

Cristine Kagona

“I have been a client of Churchill Tax Advisers both personally and with my LTD company for two years now and they handle all of my accounts and VAT returns in a proficient and timely manner. I recommend them.”

Benjamin Thomas

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