Isabel Petrie


Selborne Chambers
10 Essex Street
London WC2R 3AA
Email Isabel Petrie
020 7420 9500

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Isabel has a broad commercial and chancery practice and accepts instructions in all of Chambers’ core practice areas, with a particular focus on landlord & tenant, real property and insolvency. She is regularly instructed to advise and appear as an advocate in the High Court, County Courts and the First Tier Tribunal (Property Chamber). She is a member of the Chancery Bar Association, COMBAR and the Property Bar Association.

Isabel is appointed to the Attorney General’s C Panel of Junior Counsel to the Crown.

Areas of Emphasis

Landlord & Tenant:

Isabel acts both for landlords and tenants across a range of residential and commercial disputes. She regularly deals with claims for possession, forfeiture, trespass and nuisance; dilapidations claims; claims relating to breaches / enforceability of leasehold covenants; service charge disputes; opposed and unopposed lease renewals; disputes about the validity of property notices; and all other types of landlord & tenant dispute.

Her clients include major infrastructure providers such as Network Rail, numerous government departments, commercial investors, utility companies, developers, lenders and private landlords. Current and recent instructions include:

  • Acting for an outgoing head lessee in a multi-party commercial dilapidations matter;
  • Appearing on behalf of the management company of a large residential development in a long running service charge dispute;
  • Advising the pension fund owner of an inner city office block due to be redeveloped into residential units in relation to issues concerning alterations and user covenants.

Real Property: Isabel accepts instructions in relation to all aspects of real property matters, including co-ownership disputes, claims concerning trusts of land and proprietary estoppel. She has been instructed in contentious and non-contentious matters involving questions of Land Registration, adverse possession, trespass, easements and restrictive covenants. Isabel is also frequently instructed by and against banks, institutional lenders and finance companies to advise, draft pleadings and appear as an advocate in disputes concerning mortgages and charges. In 2016 Isabel appeared as sole counsel for the third defendant in Geoffrey John Wilkinson & Others v JS Property Holdings & Others [2016] EWHC 1242 (Ch), a one week trial concerning limitation, trusts, tracing and proprietary estoppel. Her current and recent instructions include:

  • Appearing for the claimant in a 4-day trial relating to a dispute over the co-ownership of three residential properties and one commercial property. The trial also concerned issues of undue influence and unjust enrichment;
  • Ongoing instructions from a finance company on numerous claims based on charges and guarantees, involving counsel’s input at all stages of the litigation process, from pre-action to trial.

Insolvency: Isabel acts for a wide range of creditors, debtors and office holders in both individual and corporate insolvency proceedings and is also instructed by HM Revenue & Customs, the Official Receiver and the Secretary of State for Business, Energy & Industrial Strategy. Isabel frequently advises on and appears as an advocate in proceedings concerning the disqualification of company directors. Current and recent instructions include:

  • Appearing on behalf of HMRC for the Revenue’s petition list in the winding up court;
  • Acting for the Supervisors of an IVA petitioning for the defaulting debtor’s bankruptcy in a case that gave rise to lengthy disputes over IP fees.

Commercial Law: Isabel undertakes work involving all aspects of commercial litigation. She has experience of a broad range of commercial disputes, including claims concerning the sale of goods and transfer of title, the supply of services, bailment, and the proper construction and effect of contractual terms and conditions. Isabel has been led by Romie Tager QC in a two-day appeal to the Court of Appeal in Group Seven Ltd v Allied Investment Corporation Ltd [2015] EWCA Civ 631 and by Gary Blaker QC in a two week trial inVan Collem v Van Collem [2015] EWHC 2258 (Ch). Both of these cases concerned civil fraud and multi-million pound claims. Her current and recent instructions as sole counsel include:

  • Advising clients and attending a mediation in a claim for misrepresentation in respect of the sale of company shares;
  • Acting for a telecoms company in a trial concerning the enforceability of contractual terms.

 Professional Negligence: Isabel undertakes work for clients in connection with professional negligence claims related to the practice areas above. Current and recent instructions include:

  • A claim against a top tier solicitors firm arising out of negligent advice as to the effect of a rent review clause in a lease;
  • A claim against a well-known property management and surveyors company arising out of a £20 million redevelopment of a Grade II listed building in Central London.

Probate and Administration of Estates: Isabel’s practice also includes more traditional chancery / private client work. She undertakes a range of contentious probate claims and administration of estates work, particularly where the issues involved include the treatment of real property on death. Recent instructions have included acting for the Executor of a Will in proceedings instigated against him by a beneficiary seeking to challenge an interim distribution.


Please see Isabel’s Privacy Notice here.

Notable cases

  • Geoffrey John Wilkinson & Others v JS Property Holdings & Others [2016] EWHC 1242 (Ch)
  • Van Collem v Van Collem [2015] EWHC 2258 (Ch)
  • Van Collem v Van Collem [2015] EWHC 2184 (Ch)
  • Group Seven Ltd v Allied Investment Corporation Ltd [2015] EWCA Civ 631


  • Chancery Bar Association
  • Property Bar Association


  • BA (Hons) (First Class; first in year), Newcastle University
  • GDL, City University (Commendation)
  • BPTC, City University (Very Competent)
  • Shipley Prize for Ancient History, Newcastle University
  • Harmsworth Scholarship (GDL and BPTC), Middle Temple