Bill Gilliam is a commercial dispute resolution and litigation partner. He specialises in heavyweight disputes. He has particular expertise in the management and resolution of procurement challenges. He has an enviable track record of success in litigation and arbitration, together with all forms of alternative dispute resolution, including expert determination, negotiation and mediation.

Mr Gilliam acts for national and international clients in a wide range of fields and has considerable experience of advising both private and public bodies in a range of sectors, including health, transport, retail and technology. He has led many of the highest-profile procurement litigation cases in recent years, including Network Rail v. Mermec (successful strikeout of a claim that was just out of time), Covent Garden Market Authority v. Bouygues (including a major hearing dealing with a complex disclosure exercise) and Roche Diagnostics v. Mid Yorkshire Hospitals NHS Trust (precedent-setting application for specific and early disclosure from the defendant trust). In December 2015, he successfully acted for the claimant in Counted4 Community Interest Company v. Sunderland City Council [2015] EWHC 3898 (TCC), the first reported case dealing with automatic suspension under the Public Contracts Regulations 2015.

As noted in Chambers and Partners 2018, he is praised by sources for his ‘great tactical acumen and his understanding of all the relevant considerations of all the relevant commercial concerns.’ Mr Gilliam is praised by clients in The Legal 500 for being ‘immensely liked and respected . . . his common sense and straight-talking analysis of any situation is first class.’