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David Weaver

Senior Associate


Weaver David
David Weaver

Senior Associate


David is a senior associate in our London antitrust group who regularly advises clients on all aspects of competition law, with a particular focus on obtaining UK and international merger control clearances on complex M&A transactions.

David advises across a wide range of sectors, with particular expertise in retail, technology and financial markets, and broad experience advising a range of private capital institutions.

David is also an experienced adviser on multi-jurisdictional foreign investment and national security clearances, including routinely advising on substantive UK National Security and Investment Act approvals.

David has experience as a legal adviser at the UK Competition and Markets Authority, where he advised on a complex Phase 2 merger investigation and gained invaluable insight into CMA processes and ways of working that can inform strategic decisions. He has also spent time in Allen & Overy’s office in Brussels.

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Computer chip

Publications: 21 November 2022

UK national security block of Newport Wafer Fab acquisition

The UK government has announced that it will require Chinese-owned technology company Nexperia BV to sell the 86% shareholding it acquired in July 2021 in the UK’s largest semiconductor plant, Newport…

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Publications: 23 September 2022

The National Security and Investment Act 2021: A Snapshot of experience so far

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Publications: 27 July 2022

The National Security and Investment Act 2021: The first market guidance notes

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Publications: 12 January 2022

How are government national security probes affecting technology transactions across the world?

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E1 6AD

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Admitted as a Solicitor (England & Wales), 2015


MA (Oxon), Jurisprudence, University of Oxford, The Queen’s College, 2011.

Published work

  • “Rising tide of ‘Fix-it-first’ and ‘Up-front Buyer’ remedies in EU and UK merger cases”, Allen & Overy LLP, September 2016.
  • “UK merger control: A toughening of the voluntary regime?”, Allen & Overy LLP, July 2019
  • “How should antitrust authorities investigate deals that threaten potential competition? Nascent competition in the UK – all about the potential”, Allen & Overy LLP, July 2021
  • “The National Security and Investment Act 2021: A Snapshot of experience so far”, Allen & Overy LLP, September 2022