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“Recommended for all areas of family law.”
Legal 500 
“An eye for the unusual and always willing to immerse himself in the finer details of a case.”
Legal 500 
“He gets to grips with the heart of the issue quickly.”
Legal 500 
“He has notable experience in family-related TOLATA cases arising from cohabitation and property disputes.”
Legal 500 
CEDR Accredited Mediator
2001 onwards – 6 Pump Court Chambers.
1978-2001 – 3 Dr Johnson Building (later became Charter Chambers).
Grant has a wide general common law practice. He acts in all types of family matters and handles ancillary relief at all levels. He has experience in Trusts of Land and Appointment of Trustees Act 1996 cases arising from cohabitation and property disputes and in cases where co-ownership has affected ancillary relief proceedings. In other family areas he has acted in probate and Inheritance Act cases. He has also acted in a number of commercial matters where understanding the business model of the litigating parties proved important to the ultimate resolution of the case. In the course of practice he has participated in several formal mediations.
Notable Cases (Family)
Re MM (A Child: Relocation)  EWFC B176
Application by mother to relocate to South Africa with her child, aged 15 months at the time of the judgment. Permission to the mother was granted. Click here for report in Family Law Week.
Re B (2014) EWCA 1015
Regarding evidence being used in private fact finding hearings from non-subject children in the Court of Appeal. Click here for article covering the issues and the case.
K (A Child) (2014) EWCA Civ 905
Successfully represented a father in contempt proceedings arising in a long running habitual residence case where a child had been left with paternal relatives abroad.
Iss v Tanea et al (2011)
Claim based on alleged non-existent or incorrectly issued circa 2000 ATE Policies by a firm of solicitors where costs of ATE had been paid by third party insurers. Claim for recovery of improperly recovered ATE policy costs from 6 parties. Counterclaims based on share sale agreement. Claim and approximately 9 other claims resolved shortly before trial after 17 hour mediation unsuccessful.
C v A (2011)
Commercial case involving the licencing of a proprietary product system to a national home improvement company. Claimant alleged failure to exploit through UK and claimed substantial damages. Issues involved consideration of defence that product unprofitable analysed by reference to underlying profit models, sales for each region and complex spread sheets. Claim settled.
Re L-W Children (2010)
Appeal against committal in private law based on finding that father was in breach of contact order for failing to allow contact and enforcement order. Definition of “allowing contact” under section 8 Children Act 1989 and new enforcement provisions.  EWCA CIV 1253
Re S (Children) (Restriction on Applications), Re E (A Child) (Restriction on Applications) (2006)
Claim by Father under Section 91(14) Children’s Act 1989 to reinstate contact. Opposed by mother on the basis of serious misconduct. Practice and Procedure considered by Court of Appeal.  EWCA Civ 1190. Reported at  3 FCR 50.
Woolwich plc v (1) Jones-Dunross (Charles) (2) Ombull (Maureen Lillian); Ombull v Sherrards (2005)
Claim for negligence and breach of duty by wife against solicitors who acted for husband in a remortgage of the former matrimonial home without her consent and by forging her signature. W claimed for loss of chance of recovering more than 50% in Ancillary Relief proceedings,  EWHC 1488 (Ch) (Lightman J).
Re F (1998)
“Implacably Hostile” mother’s appeal against committal for breach of contact order. Reported at  2 FLR 237 (CA)
Middleton v Steeds Hudson (1998)
Claim for solicitor’s negligence in advising on ancillary relief. Reported at  1 FLR 738 (Johnson J)
Notable Cases (Commercial and Other)
Rosario v Nadell Patisserie (2010)
Case involved relationship between normal contractual methods of claim settlement by Calderbank offers and Offers to settle under CPR Part 36 in relation to PI claim. Analysis of correspondence against CPR Part 36 provisions and contractual construction.  EWHC 1886 Reported at (2010) All ER D 288
Pearce v (1) European Reinsurance and Run Off Consultants Ltd (2) BDO (2006)
Claim by shareholder in quasi partnership company against shareholder and auditor for negligent valuation under the “buy out” provisions in articles of association. Reported at  PNLR 8 (Hart J)
Re A Debtor (2002)
Debtor’s successful appeal to High Court Judge against bankruptcy order where petitioning creditor held share as security under company articles for debt and where share valuation mechanism had been invoked.  EWHC 1495 (Ch) Lloyd J
Hangartner v Franco Vago
Claims for freight under Ameta freight sharing agreement involving Swiss and UK freight companies. Analysis of invoices and compilation of detailed spreadsheets to resolve issues of payments, mileages and shared costings.
Octagon v JBR Leisure
Landlord and tenant claim for loss of profit caused by prolonged erection of scaffolding around building. Issue of liability and causation of loss involved consideration of variation in turnover and profits demonstrating absence of real loss.
Ashley Law v Whittle
Acting for IFA against former independent IFA now litigant in person. Multiple mis-selling of Endowment Policies and investment products. Third party references to FSO to recover monies. Claims paid by IFA and sought to be recovered against defaulting IFAl issue of independent liability to firm for misspelling in light of FSA regulations and detailed licence agreements in dispute. Claim upheld.
Grant Armstrong is qualified to accept direct instructions from members of the public under the Public Access Scheme.
Information about the Public Access Scheme and how it works can be found on our Public Access page.
Certain specific Public Access services are subject to price and service transparency regulatory requirements. By clicking the link below you will be directed to the required information for those specific categories of work in respect of which Grant accepts instructions.
Family Law Update Webinar - 25th February
Six Pump Court are delighted to host this webinar which will provide a timely update on a number of topics relevant to the general family law practitioner. Further details are below Family Law Update Webinar Thursday 25 February at 5.30pm (one hour) Panel of Speakers: Stephen Hockman ...read more
Judgment in Hart v Hart case
In Thursday's judgment, the Court of Appeal denied a wife's bid for a higher divorce payout from her multi-millionaire husband. In their ruling, the judges drew attention to the fact that her husband, Mr Hart, was already a multi-millionaire when they met. Grant Armstrong represented the ...read more
Grant Armstrong representing parents of Charlie Gard in the High Court
Grant Armstrong is currently representing the parents of Charlie Gard in the High Court with Gerard Rothschild (Brick Court Chambers). The Judge - Mr Justice Francis - is considering the future of life support and medical treatment for their 11 month old son in the light of new evidence and ...read more