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Mark Bevington

Mark Bevington is the founder and Managing Principal of ADE Tax. He spent 9 years as a partner at EY before moving to Baker McKenzie as a principal in order to develop their UK advisory presence.

He decided to form ADE Tax in response to a growing sense that what clients need most of all is trusted advisors who devote their own thought and expertise to client issues.

ADE Tax’s was therefore established as a place where the best advisors could thrive. Mark is a chartered accountant and his personal specialisms are transfer pricing, policy, international tax planning and litigation.

Mark has advised on some of the most complex problems and disputes and has represented clients extensively in litigation matters.

Martin Walker

Martin Walker joined ADE Tax in January 2021. Formerly head of operational and securities tax at Deloitte London, Martin’s deep technical expertise comes from his training at Slaughter & May and his time as a tax associate at Freshfields.

He specialises in many aspects of financial services taxation, capital markets transactions and stamp duty and often addresses questions requiring input from his global network of fellow specialists.

Martin is a member of the tax consultation board of Practical Law and is a co-editor of various publications.

Photo of Martin Walker

Make Better Decisions

The best decisions require true collaboration between people with a range of skills and perspectives. We work with some of the best valuation economists and data analysists. On the legal side, we work with a range of barristers; we use juniors to support the most rigorous research and have teamed with some of the best known barristers when representing clients at tribunal.

Partnering with the best

To achieve this, we partner with the best advisors, analysists and support functions regardless of the organisation they represent. We believe this makes us more connected than advisors who feel constrained by suggesting their own colleagues or services provided by their firm.

Bring together different skills

We have worked with some of the best advisors in the Big 4 accounting firms, law firms, barristers, valuation consultants, specialist analysists and litigation support specialists. For larger firm’s, ADE’s involvement is a means of spreading risk and adding the maximum value from that firm’s specialists.

Join ADE Tax

If you are a leading advisor and our philosophy resonates, we would love to hear from you. We will always be an advisor lead business and our platform must always be an assurance that a client is receiving the highest quality advice.

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What we do

We have advised on some of the most complicated and high…

Clients perspectives

We help you design and execute more robust transfer pricing.

Thought leadership

We help you design and execute more robust transfer pricing.


Advisors can be conflicted when both offering an opinion…