LAWYER PROFILE

Simon Day

UK 2026

Macfarlanes LLP

Ranked in 1 practice area

Competition Law: Litigation

London (Firms)

1 year ranked

About

Provided by Macfarlanes LLP

Practice Areas

Litigation and Dispute Resolution

Career

Simon specialises in competition litigation and collective actions, and has extensive experience of advising in relation to both High Court trials, proceedings in the Competition Appeal Tribunal and alternative forms of dispute resolution.

He has particular experience of group litigation, both in the context of commercial disputes and in private damages actions for competition law breaches.

His practice includes co-ordinating and advising in relation to English law issues arising out of overseas proceedings, as well as in proceedings brought in the English Courts, and he advises corporates, international banks and private wealth funds as well as certain high-net-worth individuals.

Simon is a member of the Financial Services Lawyers Association and is recommended in the Legal 500 directory for EU/competition and competition litigation.

Chambers Review

Provided by Chambers

Chambers Guide to the Legal Profession

Competition Law: Litigation - London (Firms)

Band 4

Individual Editorial

Simon Day is well-reputed for his wealth of experience in collective actions at the High Court and CAT. He has a number of clients from the financial services sector.

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Strengths

Provided by Chambers

Simon Day is exceptionally thoughtful in providing advice to clients and is a strong strategic litigator.
Competition Law: LitigationChambers Guide to the Legal Profession
Simon Day is an enormously experienced disputes lawyer, both technically and from the point of view of giving strategic advice in hugely complex litigation.
Competition Law: LitigationChambers Guide to the Legal Profession
He is good at catching the intellectual high points, is a good listener and offers valuable strategic oversight.
Competition Law: LitigationChambers Guide to the Legal Profession
Simon Day is a great litigator with a lot of experience in collective proceedings and is smart and pleasant to work with.
Competition Law: LitigationChambers Guide to the Legal Profession