“He understands the law – not just the dry legal stuff, but the context around it”
“highly recommended by market sources, and is praised for his commercial bent”
“able to get on top of complex facts quickly”
“good at thinking on his feet”
Chambers & Partners / Legal 500
Duncan Sinclair specialises in public law, planning and environmental law and EU / competition law (including public procurement).
A former head of legal at the energy regulator and competition authority Ofgem before returning to the Bar in 2010 “He has excellent knowledge of energy regulation, and is down to earth and easy to work with” (Legal 500). On his return to the bar, Duncan was one of The Lawyer’s “Hot 100” lawyers across the UK legal profession and remains a leading practitioner in this and related fields.
Acting in a challenge to a decision to build a waste-from-energy incinerator (on environmental and other grounds).
Representing a party engaged in legal challenge to a planning decision based on an insufficient/invalid EIA.
Instructed by the Competition and Markets Authority as external Counsel in its Energy Market Investigation (2014-2016).
Representing a UK competition authority in National Grid v ABB (and ors) in the High Court damages claim (one of The Lawyer’s top 25 cases of 2015).
Acting in various judicial reviews (some listed below), including many of the major recent cases in regulated sectors (including energy and aviation), and cases involving environmental issues.
Advising Coventry City Council on procurement and state aid law in relation to a major redevelopment of the city centre.
“Provides great practical, commercial advice and makes himself available. His prior experience of working at Ofgem means he offers a real insight into the regulator’s processes and procedures.” “He has a superb understanding of the regulatory framework affecting energy.” Chambers & Partners 2017
R. (on the application of RWE Generation UK Plc) v Gas and Electricity Markets Authority  1 C.M.L.R. 17
Solar Century Holdings Ltd v Secretary of State for Energy and Climate Change  EWCA Civ 117;  B.L.R. 341
Skycanner v Competition and Markets Authority  3 All E.R. 67;  Bus. L.R. 1318;  Comp. A.R. 41
Skycanner v Competition and Markets Authority  CAT 7
Counted4 Community Interest Co v Sunderland City Council  EWHC 3898 (TCC) (acting for winning contractor in procurement exercise)
R. (on the application of Oxford Aviation Services (t/a London Oxford Airport)) v Secretary of State for Defence  EWHC 3898 (TCC); 164 Con. L.R. 230
R. (on the application of Drax Power Ltd) v Secretary of State for Energy and Climate Change  EWHC 2377 (Admin);  EWCA Civ 1153
Lumsdon & Ors, R (On the Application Of) v Legal Services Board (Protective Costs Orders)  EWHC 3289 (Admin)
Lumsdon & Ors, R (On the Application Of) v Legal Services Board (Divisional Court)  EWHC 28 (Admin)
R. (on the application of Homesun Holdings Ltd) v Secretary of State for Energy and Climate Change  EWHC 3575 (Admin);  A.C.D. 28
Affirmed in Court of Appeal  EWCA Civ 28;  Env. L.R. 25;  A.C.D. 29; (2012) 109(6) L.S.G. 20; (2012) 156(4) S.J.L.B. 31
National Grid Electricity Transmission Plc v ABB Ltd  EWHC 822 (Ch);  U.K.C.L.R. 177 (Submissions under the Competition Law Practice Direction)
National Grid Plc v Gas and Electricity Markets Authority  EWCA Civ 114;  U.K.C.L.R. 386