Skip to content

Dominic Long

Partner – Brussels/London

Experience highlights

Long Dominic
Dominic Long

Partner – Brussels/London

Dominic is a Partner in our global antitrust team who splits his time between our London and Brussels offices. Dominic has extensive experience advising on complex multi-jurisdictional merger clearances before both the European Commission and UK merger control authorities, as well as abuse of dominance and cartel investigations, EU State aid considerations, national security / foreign direct investment reviews and market investigations.

In the UK, Dominic has advised clients on the merger control aspects of a number of high profile transactions including four public interest interventions under the UK’s Enterprise Act 2002. This includes 21st Century Fox on the merger and UK regulatory aspects of its GBP 27.7 billion takeover bid for Sky and the subsequent GBP11.6bn sale of its 39% stake in Sky to Comcast, News Corporation on its proposed acquisition of Sky, Sky on its acquisition of a 17.9% stake in ITV (including before both the Competition Appeal Tribunal (CAT) and the Court of Appeal), and HBOS on its acquisition by Lloyds (including before the CAT). He also advises a number of international clients on highly confidential matters relevant to UK national security considerations and advised one of the UK’s 6 large energy companies on the Competition and Markets Authority’s investigation into GB energy markets, the largest market investigation undertaken in the UK.

At the European level, Dominic has advised on several major cross border transactions including three Phase II clearances before the European Commission. These include advising VEON on the EU merger control approval of its 50/50 Italian mobile telecoms joint venture with CK Hutchison, the first ‘four-to-three’ mobile telecoms consolidation cleared by the current EU Competition Commissioner Margrethe Vestager, on Hutchison 3G Austria's acquisition of Orange Austria and on Oracle's acquisition of Sun Microsystems.

Dominic is described in the Legal 500 as ‘smart and effective’, a ‘rising star’ and praised for his ‘strong intellect’ and ‘ability to translate legal advice with ease’. WWL, 2019 describes him as a ‘fantastic merger control lawyer’, who is ‘extremely dynamic and responsive’. Chambers Competition 2020 says 'Dominic Long is excellent. He has an absolute laser focus on global competition and antitrust matters…'

Other Noteworthy experience includes advising:

  • TVS Europe Distribution Ltd on the CMA’s Phase II merger control investigation of its completed acquisition of 3G Truck & Trailer Parts.
  • VEON on the merger control and regulatory aspects of the Wind Tre joint venture and the subsequent sale of the 50% stake to CK Hutchison.
  • Brinks on its acquisition of certain businesses of G4S.
  • Sky on its acquisition of a 17.9% stake in ITV (including before both the UK Competition Appeal Tribunal and the UK Court of Appeal).
  • DLG on various merger control and antirust behavioural matters.
  • Bord Gáis Éireann on the competition aspects of the privatisation of its energy division.
  • Orange Austria and its controlling shareholder Mid Europa Partners on the EU Phase II merger control clearance of its acquisition by Hutchison 3G Austria.
  • Qatar Petroleum on various confidential matters.
  • A major renewables electricity generator on the disposal of certain wind farm assets.
  • British Gas on various regulatory issues relating to the roll-out of smart meters.



Corporate and M&A

Antitrust and Competition





Allen & Overy LLP
One Bishops Square
E1 6AD

View office →


Allen & Overy (Belgium) LLP
Tervurenlaan 268A avenue de Tervueren

View office →



Admitted as solicitor, England and Wales, 2007

Admitted as solicitor, Ireland, 2018

Admitted as “avocat”, Brussels, Belgium


BA, Politics, Philosophy & Economics, Jesus College, Oxford University, 2000 (First Class)

MPhil, Management Studies, St John's College, Cambridge University, 2002 (Distinction)

Diploma, Economics in Competition Law, King's College London, 2009 (Distinction)

News & insights

Publications: 30 NOVEMBER 2020

Covid–19 coronavirus update: global application of foreign investment control rules (updated 30 November 2020)

Certain regulators are making changes to their foreign direct investment regimes in response to Covid-19 coronavirus. 

Read more
A busy road junction

Publications: 26 NOVEMBER 2020

National Security and Investment Bill: the impact on energy and infrastructure

On 11 November the UK Government published its ground-breaking National Security and Investment Bill. 

Read more
Panoramic view of the London skyline

Publications: 19 NOVEMBER 2020

UK merger control: CMA sets out its approach to assessing mergers in an increasingly dynamic and digital world

Hot on the heels of the publication of draft merger guidelines on procedure, the UK Competition and Markets Authority (CMA) has released proposed revised draft guidelines on its substantive…

Read more
National Security and Investment Bill: a new frontier for scrutiny of investment in the UK

Publications: 12 NOVEMBER 2020

National Security and Investment Bill: a new frontier for scrutiny of investment in the UK

On 11 November the UK Government published its much anticipated National Security and Investment Bill.

Read more



TMT Firm of the Year

Legal 500 UK Awards 2019

Ranked 3rd

“Global Elite” firms 2019, Global Competition Review

Competition Team of the Year

British Legal Awards 2018