Dr Katie Marquet-Horwood is an associate in the London office of Addleshaw Goddard and a member of the firm's Litigation Division. She specialises in complex and high value commercial dispute resolution and has experience of litigation before the English High Court, international arbitration and multi-jurisdictional regulatory investigations.

Recent and noteworthy cases include:

  • acting in LCIA arbitration proceedings between two leading satellite operators in relation to claims for breach of contract and misrepresentation arising from the critical malfunction of a communications satellite
  • acting for AstraZeneca in its successful High Court litigation with IBM arising out of the termination of a US$1.5bn IT infrastructure project
  • acting for Rabobank in relation to regulatory investigations into the setting of the LIBOR and EURIBOR benchmarks
  • advising a leading international investment fund in various sets of proceedings arising out of a major cross-border fraud
  • acting in litigation between two of the world’s leading technology companies arising out of a contract relating to a £5bn project for a UK government department
  • representing insurers in two large LCIA arbitrations concerning the Indonesian coal sector.


  • Year qualified: 2010
  • University of Oxford – BA Hons (First Class), English Language and Literature
  • Nottingham Trent University – Graduate LLB (First Class)