Duncan Sinclair
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Duncan Sinclair Email & Phone Number

Barrister at 39 Essex Chambers at 39 Essex Chambers
Location: London, England, United Kingdom 4 work roles 4 schools
1 work email found @39essex.com LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

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Work email d****@39essex.com
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Current company
Role
Barrister at 39 Essex Chambers
Location
London, England, United Kingdom
Company size

Who is Duncan Sinclair? Overview

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Quick answer

Duncan Sinclair is listed as Barrister at 39 Essex Chambers at 39 Essex Chambers, a company with 170 employees, based in London, England, United Kingdom. AeroLeads shows a work email signal at 39essex.com and a matched LinkedIn profile for Duncan Sinclair.

Duncan Sinclair previously worked as Barrister at 39 Essex Chambers and Ofgem co-head of legal, Head of Competition Law at Ofgem. Duncan Sinclair holds Ma And Llm, Law from University Of Cambridge.

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Email format at 39 Essex Chambers

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{first}.{last}@39essex.com
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AeroLeads found 1 current-domain work email signal for Duncan Sinclair. Compare company email patterns before reaching out.

Profile bio

About Duncan Sinclair

Barrister specialising in competition law, public law (judicial review), procurement and State Aid and (downstream/onshore) energy regulation and related commercial disputes. My practice includes environmental issues (predominant area of pro bono work). I keep a deliberately broad practice spanning most areas of challenges to/faced by public bodies or commercial disputes between parties (e.g. large contract and/or tort disputes, procurement law or competition law) typically but not always in heavily regulated sectors (energy, pharma, telecoms).Ranked as a leading practitioner in Chambers and Partners, Legal500and who’s who legal for Energy/natural resources and EU/Competition Law with extensive experience in judicial review, procurement law, commercial disputes, and regulation.Recent cases and instructions include (Updated April 2020): - High Court judicial reviews Completed including QASA, Drax Energy, Solar Panels (Friends of the Earth v SSECC), RWE v Ofgem, Solar Century v SSECC; British Gas v Pentair; Shimbles v BMDC; a JR in relation to breach of legitimate expectation arising from representations of a regulator, Gravis v Ofgem JR.- CAT (Competition Appeals Tribunal) claim for damages (settled favourably); an ongoing instruction by the NHS for damages in a 'pay for delay' infringement (Lundbeck v Commission decision by ECJ given following AG Kokott and transfer to the CAT); - Acting in the Skyscanner Appeal against decision of the OFT/CMA - advising on procurement law and acting in High Court (TCC) procurement disputes (3 cases settled one went to preliminary issues determination).- Lead lawyer on the largest (now second largest) abuse of dominance (competition law) case in the UK - Acting as external counsel for the Competition and Markets Authority in its Market Investigation (energy) 2015-17.- High Court (chancery) stand-alone competition law damages claim - intervening for a competition authority- Advising on regulatory and enforcement issues for companies under investigation including the first contested procedure against npower (reducing the penalty to half the proposed original) 2019 and some 10 settlements.- 3 contract dispute cases between suppliers and industrial customers in the High Court (one settled, 2 ongoing (value of claims from £2m into tens of millions).- Advising on renewable energy subsidy schemes and disputes including statutory appeals (7 successful appeals in 2018-2020) and changing ‘minded to’ decisions on several occasions

Listed skills include Competition Law, Legal Advice, European Law, Dispute Resolution, and 15 others.

Current workplace

Duncan Sinclair's current company

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39 Essex Chambers
39 Essex Chambers
Barrister at 39 Essex Chambers
london, greater london, united kingdom
Website
Employees
170
AeroLeads page
4 roles

Duncan Sinclair work experience

A career timeline built from the work history available for this profile.

Barrister

Current

Temple, London

A specialist in competition law, energy regulation, public law (judicial review).

Sep 2010 - Present

Ofgem Co-Head Of Legal, Head Of Competition Law

Head of the legal division handling EC law, Competition law, Judicial Review and Energy regulation

Apr 2005 - Sep 2010

Senior Associate

London

EU & Competition Law; Economic Regulation

Apr 1999 - Apr 2005

Associate

Brussels Area, Belgium

EU & Competition Law including merger control, cartels and abuse of dominance

Sep 2001 - Apr 2003
Team & coworkers

Colleagues at 39 Essex Chambers

Other employees you can reach at 39essex.com. View company contacts for 170 employees →

4 education records

Duncan Sinclair education

Ma And Llm, Law

Activities and Societies: DCBC first VIII (Henley quarterfinalists and Head of River); Vice President University French Society; Hockey.

Master Of Laws (Ll.M.), Law

Activities and Societies: Public international, EU and Competition law Law MA and LL.M in European Law

Education record

Rbcs

Activities and Societies: Hockey, Athletics, Public Speaking teams Head Boarder World Public Speaking Championship - Finalist, Boston 1989

FAQ

Frequently asked questions about Duncan Sinclair

Quick answers generated from the profile data available on this page.

What company does Duncan Sinclair work for?

Duncan Sinclair works for 39 Essex Chambers.

What is Duncan Sinclair's role at 39 Essex Chambers?

Duncan Sinclair is listed as Barrister at 39 Essex Chambers at 39 Essex Chambers.

What is Duncan Sinclair's email address?

AeroLeads has found 1 work email signal at @39essex.com for Duncan Sinclair at 39 Essex Chambers.

Where is Duncan Sinclair based?

Duncan Sinclair is based in London, England, United Kingdom while working with 39 Essex Chambers.

What companies has Duncan Sinclair worked for?

Duncan Sinclair has worked for 39 Essex Chambers, Ofgem, Simmons & Simmons, and Lovells.

Who are Duncan Sinclair's colleagues at 39 Essex Chambers?

Duncan Sinclair's colleagues at 39 Essex Chambers include Adam Boukraa, Philippe Kuhn, Mark Mclaughlin, Samantha Jones, and Swee Im Tan.

How can I contact Duncan Sinclair?

You can use AeroLeads to view verified contact signals for Duncan Sinclair at 39 Essex Chambers, including work email, phone, and LinkedIn data when available.

What schools did Duncan Sinclair attend?

Duncan Sinclair holds Ma And Llm, Law from University Of Cambridge.

What skills is Duncan Sinclair known for?

Duncan Sinclair is listed with skills including Competition Law, Legal Advice, European Law, Dispute Resolution, Public Law, Litigation, Courts, and Administrative Law.

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