Thomas Cosgrove KC > Cornerstone Barristers > London, England > Lawyer Profile

Cornerstone Barristers

Work Department

Planning and public law


Leading planning and public law barrister appointed Queen’s Counsel in 2017. His work typically entails leading multi-disciplinary teams of experts in relation to development and infrastructure projects as well as providing early tactical advice and written/oral advocacy at inquiries or in court. Tom aims to add value to his clients’ work and deliver a very high quality service drawing on his extensive experience across a range of sectors.

Tom provides an unstuffy approach that understands his clients and their needs, providing them with clear and comprehensible advice. He has extensive experience of planning inquiries and related high court statutory challenges. Tom acts for both private clients (including several of the leading housing developers) and planning authorities. He has recently been involved in major planning inquiries concerning residential schemes in England and advising private clients on strategic planning in the context of emerging local plans and infrastructure projects.

Tom is regularly instructed in relation to major proposals concerning heritage assets and large scale commercial developments. He has a wealth of experience of large scale renewable energy proposals and of promoting and resisting development proposals in countryside areas of outstanding natural beauty, national parks and the green belt. Tom regularly appears in the higher courts.

Editor and co-author of Cornerstone on the Planning Court.


Called 1994, Inner Temple.


Planning and Environment Bar Association (PEBA); Constitutional and Administrative Law Bar Association (ALBA)


St Edwards School; Sidney Sussex College, Cambridge (1993 BA Hons Law; 1997 MA); Evan Lewis-Thomas Law Scholar 1993.


Golf, fly-fishing, cricket, painting.

Lawyer Rankings

London Bar > Planning

(Leading Silks)Ranked: Tier 3

Thomas Cosgrove KC –Cornerstone Barristers ‘Tom’s advocacy is calm, considered, and to the point. He is excellent at instilling confidence in clients and has a very realistic view of prospects and outcomes.’

The ‘fantastic range of barristers’ at Cornerstone Barristers use their ‘excellent skills and expertise in the planning law field’ to advise a variety of clients on a full scope of cases. The chambers utilises its extensive sector knowledge of public law, energy, property, and local government law to bolster its planning offering. Michael Bedford KC acted for Suffolk CC in the Sizewell C Nuclear Power Station DCO Examination, concerning the eponymous power plant. In addition to this, Richard Ground KC successfully represented Twickenham Studios in the Twickenham Film Studios Arlington Works Planning Inquiry regarding a scheme which endangered the future of the historic film studio. Thomas Cosgrove KC successfully defended a judicial review claim for Mid Suffolk DC regarding an attempt which sought to quash planning permission for a 300-dwelling scheme in Ewans v Mid Suffolk DCWayne Beglan  acted for Hackney Council in a series of  cases which involved a judicial review, an appeal to the Court of Appeal, and an eight day planning inquiry appeal; the string of matters ultimately concerned prohibitory and mandatory injunctions against art installations which were installed at commercial premises.