Wes Walker

Of Counsel

Wes is an English-qualified lawyer specialising in complex cross-border commercial disputes. He has deep experience across the full range of dispute resolution mechanisms and has a particular focus on clients operating in the IT and life sciences sectors. He regularly advises clients on pre-litigation strategy and has handled large-scale commercial litigation before the High Court and the Court of Appeal in the UK as well as in arbitrations under various institutional rules.

Wes trained and practised at a magic circle firm and at a leading US firm before joining Bristows in 2017. Wes speaks English, German and Welsh.

Wes’ recent representative experience includes:

  • Acting for a biotech business in the defence of entitlement claims before the Patents Court concerning its core DNA manufacturing technology.
  • Acting for a global aerospace business in connection with claims for breach of a call option agreement and breaches of an exclusivity arrangement for the supply of complex parts. Successful in recovering ca. $120m following a four-week trial in the Commercial Court.
  • Defending a Japanese pharmaceutical company in an ad hoc arbitration seated in London in connection with the development and subsequent commercialisation of a blockbuster monoclonal antibody therapeutic.
  • Acting for a major global electronics manufacturer in an ICC arbitration seated in London in connection with alleged breaches of a licensing agreement for the supply of chips.
  • Acting for the world’s largest advertising group in defence of a claim concerning the meaning and effect of an earn-out provision in a sale and purchase agreement for complex software responsible for administering programmatic advertising campaigns. Trial in the Commercial Court.
  • Advising an aerospace manufacturer in connection with a series of disputes with airlines over the supply of complex parts.
  • Advising a global technology brand providing specialised mining systems and equipment in dispute with a supplier over alleged breaches of contract and intellectual property infringement.
  • Acting for a life sciences business in dispute with its CRO over the running of Phase II clinical trials.
  • Acting for an IT services provider against HM Government in connection with historic claims of overcharging under a long-term IT services contract.
  • Acting for an IT services provider faced with complaints of producing allegedly faulty code during the implementation of a complex IT system.
  • Advising an app developer in connection with claims for indemnification arising out of alleged breaches of third-party intellectual property rights.
  • Advising an IT services provider in connection with quality complaints arising out of the development of a bespoke IT system.
  • Advising individuals in connection with the settlement of claims arising out of the London Capital & Finance minibonds scandal.
  • Defending a South African sales and merchandising company in an arbitration concerning the meaning and effect of various commercial contracts.


  • BA German, University of Warwick
  • Graduate Diploma in Law, BPP Professional Education
  • Legal Practice Course, BPP Professional Education
  • Higher Rights of Audience (Civil)

What others say

“Westley Walker is a very capable lawyer who is a real asset to any team.” Legal 500 2024
“Westley Walker is an outstanding senior associate, who has an exceptional eye for detail, strong communication skills and sound judgement.” Legal 500 2023
Westley Walker has "good knowledge/knowhow and experience in litigation practices especially in disclosure (document search/collection/production)." Legal 500 2021

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