Simon Day > Macfarlanes LLP > London, England > Lawyer Profile

Macfarlanes LLP

Work Department

Litigation and dispute resolution


Simon specialises in competition litigation and other complex multiparty disputes, and has extensive experience of advising in relation to both High Court trials and alternative forms of dispute resolution.

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

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 as “a rising star with substantial litigation experience”.


Qualified 2009; partner 2019

Lawyer Rankings

London > Dispute resolution > Competition litigation

Steered by seasoned competition expert Malcolm Walton, Macfarlanes LLP is routinely engaged in high-stakes disputes arising from regulatory investigations, collective damages proceedings, and precedent-setting appeals. Cameron Firth enjoys a stellar reputation in the market – and the pharmaceuticals sector especially – on account of his broad capabilities in merger control matters, dawn raids and inspections, and contentious matters before the English and EU courts. Simon Day is similarly well regarded for his expertise in group litigation, handling numerous individual and collective damages actions for clients in the transport, automotive, and banking sectors. Emma Radcliffe, who was promoted to partner in May 2021, is noted for her proficiency in investigations before both the European Commission and the CMA, as well as follow-on claims at the High Court and in the CAT. Senior counsel Caja Griesenbach maintains a keen focus on jurisdiction challenges.

London > Corporate and commercial > EU and competition

Macfarlanes LLP‘s combination of ‘excellent legal knowledge and commercial acumen‘ makes them a strong choice for a wide variety of clients, ranging from pharmaceutical companies to industrial manufacturers. Steered by practice head Malcolm Walton, the team regularly advises on cross-jurisdictional merger control actions, FDI proceedings, and high-stakes investigations instigated by the CMA, among other relevant authorities. Cameron Firth is widely lauded by peers and clients alike for his capabilities in CMA investigations and merger control matters, most notably in the pharmaceutical sector. The ‘excellentTom Usher is recommended for his ‘unparalleled’ competition knowledge in the financial services and broadcasting sectors, while Emma Radcliffe draws equal praise for her work in cross-border cartel investigations. Simon Day specialises in private damage actions for competition law breaches, including collective and individual claims.