Matthew Knight-Olsen is a senior associate in the Litigation and Dispute Resolution Practice of Mayer Brown’s London office. He joined Mayer Brown as a trainee in 2013 and, since qualifying in 2015, he has advised on a broad range of contentious and non-contentious insurance matters.  He is experienced in advising insurers in relation to policy drafting and policy coverage issues and disputes under a variety of lines of insurance, including:

Financial Lines: Matthew regularly assists insurers in relation to claims under warranty and indemnity policies and his recent experience includes claims arising from breaches of warranty involving accounting issues, tax liabilities, contractual disputes and regulatory issues in target companies and subsidiaries in the UK, Italy, France, Poland and Japan. He also assists insurers with drafting of W&I policy wordings. During his training contract, Matthew also spent six months working with the W&I underwriting team of a leading Lloyd’s insurer.

Matthew has also assisted with advising the FI insurance market in relation to claims involving rate-fixing scandals, prospectus liability issues and misconduct claims, including those involving US securities class action exposure.

Trade Credit and Political Risk: Matthew has advised insurers in relation to claims under trade credit and political risk policies involving oil forward pricing contracts, infrastructure investments, commodities trading and retail franchising. These claims have emanated from Nigeria, Ethiopia, Romania, Tajikistan and Australia, and have given rise to a range of policy issues, such as non-disclosure and misrepresentation.

Matthew also has experience of advising leading financial institutions on trade credit policy wordings that form part of wider trade receivables securitisation programmes.

Management and Professional Liability: Matthew advises insurers of a wide range of professionals, including accountants, solicitors and architects/engineers.

Matthew has also advised insurers in relation to claims under Employer Liability policies, and on cyber liabilities faced by public liability insurers arising from one of the most significant global data breach incidents to date involving a financial services institution.

As well as experience of advising insurers on coverage issues, Matthew also has experience of defending claims against professionals, including solicitors and barristers. This includes claims arising from M&A transactions, banking and finance transactions and advice given to the promoter of a tax efficient investment scheme. 

Spoken Languages

  • English


Staffordshire University, Stoke-on-Trent, LPC

Keele University, Graduate Diploma in Law

University of Oxford, Merton College, MBiochem in Molecular and Cellular Biochemistry


  • England and Wales