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Addleshaw Goddard

Work 0113 209 2000
Fax 0113 209 2060
12004 LEEDS

Bill Gilliam

Work 0113 209 2442
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.

London: Public sector

Administrative and public law

Within: Administrative and public law

Addleshaw Goddard has a strong dispute resolution team that handles litigation, judicial reviews and regulatory challenges for commercial clients, especially in the energy sector as well as government and other public bodies. A client affirms: 'They have a good judicial review regulatory team and are frequently instructed in the energy sector.' Simon Kamstra  'is excellent with clients and an inspirational leader of a team' and Bill Gilliam 'is truly excellent - one of the best strategic thinkers.' The team is further enhanced by Clare Dwyer 'who is a measured and confident practitioner who is imaginative about finding solutions for her clients including ADR.' Managing associate Paul Rowley  and Susan Garrett are also well rated practitioners. Highlight work includes acting for Scottish and Southern Energy which joined a judicial review challenge against Ofgem on the highly contested matter of the statutory basis for charging for connections to the national grid by electricity distributors.

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Yorkshire and the Humber: Dispute resolution

Commercial litigation: Leeds and West Yorkshire; North Yorkshire

Within: Leading individuals

Bill Gilliam - Addleshaw Goddard

Within: Commercial litigation: Leeds and West Yorkshire; North Yorkshire

Addleshaw Goddard receives ‘full marks across the board’ from clients, who single it out as ‘responsive, pragmatic and commercial with deep technical know-how’. Key individuals include head of international arbitration Simon Kamstra, who is ‘a first-class lawyer'; commercial litigation team head Bill Gilliam, who is ‘a consummate professional and manages to blend by-the-book legal advice with real world application and behaviour to help bring any dispute to a swift and effective solution’; and Sally Emerton, who leads the Northern litigation team and the financial services group and ‘takes a no-nonsense approach’. The team handles high-value complex litigation at a national and international level across multiple sectors with particular expertise in the energy, IT, industrial, transport and health sectors. Kamstra recently represented Scottish and Southern Energy in its support of a judicial review challenge against Ofgem relating to the statutory basis for charging for connections to the national grid by electricity distributors, and Gilliam defended Diageo in a case brought by SAP alleging unauthorised use of its software by Diageo’s customers and sale representatives via third party software. Louise Dobson, who made legal director in 2017, is recommended for health and pharmaceutical matters.

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Yorkshire and the Humber: Insurance

Professional negligence: claimant

Within: Professional negligence: claimant

Addleshaw Goddard's professional negligence practice represents regional, national and international clients in claims across a range of sectors, but has particular expertise acting for major lenders bringing actions against solicitors, valuers and other professionals. +Sally Emerton is head of litigation for the North, and leads the firm's clinical negligence department. +Joe Wilkinson specialises in claims arising from the construction space, while Bill Gilliam is the firm's go-to for claims brought by commercial clients, outside of the financial sector. Managing associate Lee O’Sullivan is highlighted as 'extremely competent', particularly in complex banking matters.

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Yorkshire and the Humber: TMT (technology, media and telecoms)

IT and telecoms

Within: IT and telecoms

Addleshaw Goddard ‘gains the trust of its clients instantly’ thanks to ‘a professional and highly pragmatic team of experts in the field’ who have ‘an excellent ability to wade through negotiations and achieve the best possible outcome in the toughest of circumstances’. Team head Michael Lowry focuses on significant IT procurements, outsourcings, data centre and cloud issues, and software arrangements. Other key individuals include consultant Ian Sampson, who is ‘a pleasure to deal with’, litigator Bill Gilliam and Simon Lofthouse, who advises clients in the financial services, industrials, retail, health and digital sectors. Recent highlights include advising Blue Octopus Recruitment on its restructuring and updating its standard terms and conditions and defending Diageo in a software licensing case against SAP alleging unauthorised use of its software by Diageo’s customers and sales representatives. Other clients include Associated British Foods, Primark, SSE, Arriva and Microsoft. Ryan Gracey joined Gordons LLP.

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