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Chambers of Mark Cannon QC

Living Wage
Work 020 7822 2000
Fax 020 7822 2001

David Halpern QC

Work 020 7822 2000
4 New Square (Chambers of Mark Cannon QC)

Work Department

Professional negligence and commercial Chancery litigation.


Since taking silk in 2006, David has continued to focus on his core areas of professional negligence and commercial Chancery work. He particularly relishes the challenge of acting for or against professionals in areas which call on his expertise in the underlying issues of property, company law, insolvency and accounts. He has wide experience of both litigation and mediation, as well as advisory work. He sits part-time as a deputy High Court judge in the Chancery Division, is a Bencher of Gray’s Inn and an advocacy trainer for the Inn and has chaired disciplinary tribunals for the Bar Standards Board. He has been called to the Bar of Gibraltar


Chancery Bar Association (former chairman of the International Subcommittee), COMBAR, Property Bar Association and Professional Negligence Bar Association.

London Bar

Professional negligence

Within: Leading Silks

David Halpern QC - 4 New Square ‘ Exceptionally bright and unflappable. ’

Within: Professional negligence

4 New Square is 'top of the tree for professional negligence work' thanks to its 'wide range of experience and expertise meaning it is able to provide suitably experienced counsel for a range of claims and subject matters.' Key highlights for the 'user-friendly' set includes Justin Fenwick QC acting for the appellant in Manchester Building Society v Grant Thornton, which examined the application of SAAMCO in auditors’ negligence cases, while Ben Patten QC and David Halpern QC represented parties on both sides in Dreamvar (UK) Ltd v Mishcon de Reya, the leading case on liability for identity fraud in conveyancing. Elsewhere, Jonathan Hough QC, Miles Harris and Jamie Smith QC appeared in Accident Exchange v McLean, which examined the scope of legal professional privilege. Fenwick QC and George Spalton acted for PwC in Premier MotorAuctions v PwC & Lloyds, a £50m claim involving allegations of negligence and conspiracy, while Neil Hext QC and Alison Padfield QC acted on either side of a claim against insurance brokers arising from a fire at a popular East London bar.

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Property litigation

Within: Leading Silks

David Halpern QC - 4 New Square ‘ Fantastic at property-related professional negligence. ’

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