Bill Gilliam > Addleshaw Goddard > Leeds, England > Lawyer Profile

Addleshaw Goddard

Work Department

Commercial litigation dispute resolution.


Bill is a partner in the commercial dispute resolution/litigation team. He specialises in heavyweight disputes. He has particular expertise in the management and resolution of procurement challenges, major IT project disputes, claims arising from the sale and purchase of businesses, contract terminations and the resolution of large scale business-critical supply/JV disputes. Bill has over 20 years’ experience in litigation and arbitration, together with all forms of alternative dispute resolution (ADR), including expert determination, negotiation and mediation. He acts for national and international clients and has considerable experience of advising both private and public bodies in a range of sectors, including health, transport, utilities, retail and technology. Examples of Bill’s recent experience include: acting for a wide variety of contracting authorities and utilities, as well as bidder clients on procurement challenges and achieving successful outcomes, by way of negotiation, strike out/summary judgment and swift partial re-run; advising ‘behind the scenes’ on highly sensitive procurement issues; assisting IT suppliers and customer organisations on resolving large scale disputes with IT outsourcing, changes in specification/scope, project delivery delays and performance failures, using escalated dispute resolution processes, negotiation, mediation, expert determination, arbitration and court proceedings; advising private and public sector organisations on complex and/or critical issues, including the management, renegotiation, default and termination of major contractual relationships; resolving high value completion account and warranty claims; dealing with several high profile judicial reviews in a number of sectors.


Commercial dispute resolution/litigation partner, Eversheds LLP January 1994-December 2013 (20 years); commercial dispute resolution/litigation partner, Addleshaw Goddard LLP, January 2014 to present.


Society of Computers and Law; Procurement Lawyers Association.


Leeds Grammar School; Manchester Metropolitan University (Law, 2.1 hons).


Family, running, Krav Maga.

Lawyer Rankings

Yorkshire and the Humber > Transport

Addleshaw Goddard has a diverse transport practice, with specific expertise in the rail sector. Areas of growth for the group include freight and logistics issues, with a focus on developing sustainable supply chains, as well as broadening its expertise in urban transit schemes, particularly in the bus market. The team has a strong reputation in advising on transport-led regeneration and infrastructure projects, with practice co-heads Paul Hirst and Anna Heaton spearheading the firm’s work in this area. Bill Gilliam and legal director Ryan Geldart are recommended for contentious matters related to procurement challenges, while associate Jack Harris has experience advising on various rail projects across the UK.

Yorkshire and the Humber > Dispute resolution > Commercial litigation: Leeds and West Yorkshire; North Yorkshire

(Leading individuals)

Bill GilliamAddleshaw Goddard

Addleshaw Goddard has considerable sector expertise in the energy, transport, health, and retail and consumer products areas, acting for FTSE 100 companies, central and local government, high-net-worth individuals and entrepreneurs. Beyond a variety of B2B cases, the group also takes on procurement and judicial review matters, fraud and professional negligence claims, and pension disputes. Bill Gilliam‘s practice also encompasses customer/supplier clashes and outsourcing disputes. He leads the team, which also includes the ‘very helpful and knowledgeableLouise Dobson and legal director Gareth Jones, who is a contracts specialist. Simon Kamstra relocated to London.

Yorkshire and the Humber > TMT (technology, media and telecoms) > IT and telecoms

Addleshaw Goddard offers ‘extensive commercial knowledge of their practice areas’ and advises national and international clients on high-end transactions and contentious mandates. Praised for his ‘keen eye for detail and ability to get a deal done’, Michael Lowry heads the Leeds-based practice and advises clients on IT projects, while Simon Lofthouse focuses on large-scale procurement, outsourcing and cloud arrangement matters. Bill Gilliam is a key contact for licensing disputes and associate James Mort is ‘relentless in his pursuit of a great outcome’ when handling outsourcing projects. Other key members of the team include associates Charlotte Marshall and Priscilla Hetherton.

Yorkshire and the Humber > Public sector > Health

The members of Addleshaw Goddard‘s team are noted for being ‘highly detailed and forensic in their analysis of the options.’ The group covers the full range of public sector and health infrastructure issues, social and long-term care matters, life sciences work and private healthcare instructions, often working in close collaboration with different practice groups. Bill Gilliam handles disputes for private and public sector healthcare clients; he leads the firm-wide team with Manchester-based Mike O’Connor. Louise Dobson handles disputes in relation to contracts, data issues and procurements.

Yorkshire and the Humber > Insurance > Professional negligence

Addleshaw Goddard handles professional negligence matters across a wide range of sectors. It has a particularly strong construction offering as well as a growing banking practice that has been bolstered by the arrival of finance litigation legal director Sandip Singh from Walker Morris LLP in November 2021. Singh has significant experience in bringing claims relating to negligence, fraud and misappropriation of funds. Ben Lowans handles investment negligence cases on behalf of high net-worth individuals while Bill Gilliam assists commercial clients. Joe Wilkinson is a key construction litigation partner. Sally Emerton, head of finance litigation in the North, leads the practice.

London > Public sector > Administrative and public law

The ‘highly competent and experienced legal team’ at Addleshaw Goddard regularly represents both public bodies – including governmental authorities – and private sector clients in judicial reviews. The firm fields a strong cross-disciplinary team with recognised litigation practitioners, who bring sector experience and insight. Simon Kamstra specialises in high values international disputes with a focus on energy and utilities. ‘Skilled negotiatorBill Gilliam is experienced in health, transport, energy and infrastructure. Clare Dwyer is known for her public law work arising from the Covid-19 pandemic. At managing associate level, Paul Rowley is singled out.

London > Dispute resolution > Commercial litigation: premium

Addleshaw Goddard‘s ‘nimble‘ offering leverages the firm’s international office network to represent major corporates in disputes. Technology is a sector of particular focus and growth for the group, with Lauren Hamilton standing out as a key contact for such work; the team has latterly seen surges in instruction across the core fields of transformation projects, software licensing, and data issues. London-based Mark Molyneux heads up the global disputes practice, while Bill Gilliam oversees the commercial litigation department from the Leeds office. Other recommended practitioners based in the capital include ‘brilliant thinker and strategistNatasha Winter, who made partner in May 2022, and Paul Chaplin, who joined from Hogan Lovells International LLP in February of the same year.