Jack Prytherch is a Partner in our tax disputes team. He represents both corporate and private clients on a variety of UK and international tax disputes.

Jack’s practice covers all forms of (direct and indirect) contentious tax matters, including: tax litigation and alternative dispute resolution; HMRC enquiries and compliance checks; HMRC civil information powers; tax offences and serious investigations; voluntary disclosures and penalty mitigation; and commercial tax disputes.

His clients range from multinationals to high-net-worth individuals, and he has extensive experience across a variety of sectors, including: technology, media and communications; financial services; energy and utilities; and life sciences and healthcare.

Jack is ranked in Chambers and Partners and has been featured as a ‘Key Lawyer’ and ‘Rising Star’ in Legal 500. He authored the first UK chapter of the Chambers and Partners Tax Controversy Global Practice Guide and regularly writes commentary on contentious tax issues for various publications.

Prior to specialising in tax disputes, Jack also had a background in advisory and transactional work in respect of a broad range of UK and international tax matters. Applying this technical and commercial background to contentious tax matters, he is able to find solutions that achieve the best commercial results for clients (including working with clients and industry bodies to secure changes to tax legislation and long-standing HMRC policy). Where a tax appeal or judicial review is unavoidable, Jack has experience litigating before the tax tribunals and higher courts, including at the Supreme Court level.

“Jack Prytherch has provided a first-rate service”

Chambers and Partners, 2024

Helping you succeed in tomorrow's world

Recent years have seen fundamental shifts in the global tax landscape, as tax authorities struggle to keep pace with the digitalisation and globalisation of the economy. With unprecedented levels of international cooperation and changes to long-standing tax rules, tax disputes are increasingly on the rise. The potential for reputational harm means that tax is also a key part of the ESG agenda. My goal is to help clients navigate this increasingly complex and hostile environment.

“He is easy to work with, hard-working, and clients like him because he explains things thoroughly and clearly”

Chambers and Partners, 2024