Andrew Watt QDR, MAE


Mobile: +44 (0)777 022 1051


Andrew began his career in HM Customs & Excise and subsequently moved to HMRC (then called the Inland Revenue) as one of HM Inspector of Taxes.  After completing his training he was sent as District Inspector in charge of Folkestone District and was soon transferred to Head Office as a fraud investigator in Enquiry Branch (now Fraud Investigation Services “FIS”) where he spent six years conducting Code of Practice 9 “COP9” investigations on a wide variety of individuals, partnerships and companies. On leaving Enquiry Branch, Andrew was appointed in charge of a number of Districts in London before leaving the Revenue to join Blyth Dutton a West End law firm – later merged with Lawrence Graham.

Subsequently Andrew became a partner at a top 20 accountancy practice Casson Beckman and later took on the same role at Moores Rowland. From there Andrew and his team were invited to join Williams Jeffrey Barber, later rebranded Chiltern plc, one of the UK’s leading tax advisory firms. During that time Andrew’s team, which had by that time grown to 14 investigators, won the prestigious Best Tax Investigations team award at Tolley’s annual awards ceremony.  Andrew then joined Alvarez & Marsal Taxand LLP – a US professional services firm which he left in 2011 to set up his own practice.

Qualifications and additional information

He writes extensively for a number of professional magazines, is frequently asked to comment on investigation matters by leading newspapers and is a regular speaker on the conference circuit. He also contributes a chapter on HMRC Criminal Investigations for a loose leaf publication and collaborated with a prominent criminal lawyer on a similar chapter for another publisher.

Andrew founded ICAEW’s Tax Investigations Practitioners Group (TIPG) and was co-chair until 2018. The TIPG committee regularly meets senior members of HMRC to discuss investigation policy and practice.

Andrew is a Member of the Academy of Experts and is a qualified commercial mediator.


Rebecca Busfield CTA, MA Oxon


Mobile: +44 (0)7949 588 943


Rebecca started her career as a management accountant at a Lloyd’s of London managing agent (SVB Syndicates Ltd) in 2000. Rebecca gained a place on Ernst & Young’s graduate tax rotation scheme in 2002. She worked in various teams including Global Mobility (expatriate tax), Employment Tax Solutions (tax planning for employees and employers, such as employee benefit trusts “EBTs”) and Employment Tax Consulting (PAYE/NIC, including due diligence investigations).

Rebecca settled in the Tax Risk Management team where she specialised in managing HMRC enquiries for individuals and companies. She helped project-manage one of HMRC’s largest Code of Practice 8 “COP8” enquiries under the Litigation and Settlement Strategy “LSS” which involved working at the client to review all the documentation and email correspondence in relation to setting up various transactions and deciding what to provide to HMRC based on relevance and legal privilege.

In 2008 Rebecca moved to Alvarez & Marsal Taxand LLP, where she specialised in Code of Practice 9 “COP9” enquiries, Code of Practice 8 enquiries, New Disclosure Opportunity “NDO” and Liechtenstein Disclosure Facility “LDF” reports. She managed one of the largest disclosures to HMRC under the NDO of over £1 million and LDF of over £3 million.

She left A&M in 2012 to set up Watt Busfield Tax Investigations LLP with Andrew Watt. She loves working closely with clients to understand their tax affairs and enjoys the satisfaction when the tax issue has been resolved.

Qualifications and additional information

Rebecca received a bachelor’s degree (2:1) in Geography from Oxford University. She is a qualified Chartered Tax Adviser (CTA) and member of the Chartered Institute of Taxation (CIOT). She received a distinction in her Association of Tax Technician (ATT) exams. Rebecca is also part qualified with the Chartered Institute of Management Accountants (CIMA).

Rebecca is a member of ICAEW’s Tax Investigation Practitioners Group (TIPG).

Rebecca undertook a six month secondment at The Prince’s Trust in 2006 in the business development team, and completed their 270km Coast to Coast team challenge raising over £4,000. She also completed the London Marathon in 2007. She is a supporter of the National Trust, Landmark Trust and renewable energy.

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Watt Busfield Tax Investigations LLP are registered with the Chartered Institute of Taxation (CIOT) for the purposes of Anti-Money Laundering legislation. We are covered by the CCAB’s Privilege Reporting Exemption.