The Legal 500

Twitter Logo Youtube Circle Icon LinkedIn Icon

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: Professional negligence – Leading silks

David Halpern QC - 4 New SquareHis advocacy is strong and to the point, and he is quick to raise relevant points in cross-examination.

Within: Professional negligence

4 New Square is ‘regarded as one of the go-to sets for professional negligence work’ and it stands out for its ‘great strength in depth’ and for a ‘focus on quality.’ Members act for both claimants and defendants on an array of disputes; Roger Stewart QC and Scott Allen were successful in the leading Supreme Court case examining solicitors’ negligence, BPE Solicitors v Hughes-Holland, in which David Halpern QC also appeared. David Turner QC and Nicole Sandells QC were also victorious in the Supreme Court case Swynson v Lowick Rose LLP, which was a claim involving accountants’ negligence. In the Court of Appeal, Neil Hext QC acted for the successful respondent insurance broker in Channon v Ward.

[back to top]

Property litigation and agriculture

Within: Property litigation – Leading silks

David Halpern QC - 4 New SquareHe can find and sustain a cause of action where lesser barristers would fail.

[back to top]

Back to index

Legal Developments worldwide

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to