Graeme McPherson QC > Chambers of Mark Cannon QC > London, England > Lawyer Profile

Chambers of Mark Cannon QC
4 New Square

Living Wage


Principal areas of practice are (1) professional liability (in particular claims involving accountants and auditors, solicitors and barristers, financial service professionals and sports agents), (2) professional discipline (3) sports law and discipline, and (4) commercial litigation, including insurance & finance services litigation. Recent important cases include: Professional Liability & Commercial: Coulthard v Neville Russell (CA) [scope of auditors’ duty of care]; Barex Brokers v Morris Dean (CA) [scope of valuers’ duty of care]; Flannery v. Halifax EA (CA) [duty of judge to give adequate reasons]; IAICL v Cook (CA) [scope of auditors’ duty of care]; University of Keele v PWC (CA) [construction of exclusion clause in accountants’ retainer]; Keydon Estates v Eversheds (Ch) [damages for loss of hypothetical profit]; Glyn v McGarel-Groves (QB) [scope of treating and supervising vets’ duties]; Shawton Engineering v DGP (CA) [scope of PII cover provided by a design & build policy]; Hickman v Blake Lapthorn (QB) [duties of barrister when advising on settlement]; Sunderland Mutual Marine v Wiseman (Comm) [conflict of laws within UK]; Hedrich v Standard Bank (CA) [wasted costs; duties to court]; Fulham Leisure Holdings v Nicholson Graham Jones (CA) [claim arising from sale of Fulham AFC]; Kidsons v Various Underwriters (CA) [‘notification’ under a PII policy]; Webster v Sandersons (CA) [damages for reflective loss]; Gill v Humanware (CA) [wasted costs jurisdiction in ETs]; Spreadex v Barnes (Ch) [claim arising from drafting of a gambling arrangement]; Fonexco v Manches (QB) [obligations of a solicitor in a jurisdiction race]; Zurich v Brown & Barnes (Ch) [construction of Solicitors MTCs]; Thomas v Capita (Ch) [film finance litigation]; Mengiste v EFFORT (CA) [recusal of Judge; wasted costs]; Baxter v Howreys (Comm) [claim arising from mishandled litigation]; Redstone Mortgages v B Legal (Ch) [solicitors’ obligations towards mortgagee client]; AIB v Mark Redler & Co (SC) [breach of trust against solicitors; measure of compensation]; Platform v Persimmon (Ch) [claim in fraudulent misrepresentation]; Marrache v Baker Tilly (Gib SC) [scope of ex turpi causa defence]; Standard Life v Collins (Comm) [claim against director]; MEX v Hindle Campbell (Ch) [group litigation against solicitors said to have been involved in conspiracy to conduct mortgage fraud]; Dewey & Lebeouf v Kerself (Comm) [obligations of corporate solicitors handling an overseas bond issue]; Re Duff & Phelps (Comm) [collapse of Rangers FC]; Re Deep Purple (Ch) [recovery of stolen royalties]; Fincantieri v Clyde & Co (TCC) [failed arbitration over construction of a mega-yacht]; HGF v Goodman Derrick (Comm) [litigation over sale of an Impressionist masterpiece]; Harding Evans v Spencer-White (CA) [scope of solicitors lien; implication of terms of ‘trust & confidence’]. Sport: Nicky Henderson, Aidan O’Brien, Howard Johnson, CASELA PARK, Jim Boyle, Mahmood Al Zarooni, Gerard Butler, Jim Best, Grand National 2014, Bradley & Powell; 2015 St Leger appeal (BHA Disciplinary Panel & Appeal Board) [corruption, doping, sporting disrepute]; Whittaker (FEI Inquiry) [doping]; Mullins v Jockey Club (Admin Ct) [amenability of sporting bodies to judicial challenge]; Arachi v Fallon (CA) [injunction to prevent jockey from riding in Derby]; Burton v British Shooting (Sports Resolutions) [Olympic selection dispute]; Sports Mantra v Force India (Ch) [F1 sponsorship dispute]; Various athletes [IAAF & CAS) [doping]; Various rugby players (RFU & WR) [doping, disciplinary]; Pelosi v WBA FC (QB) [injunction to stay litigation to a Rule K arbitration]. Professional Discipline: RCVS v Jones & RCVS v Auerbach (RCVS Disciplinary Panel) [disgraceful conduct]; BSB v McCarthy & BSB v Thornhill QC (Bar Disciplinary Tribunal) [dishonesty, misconduct]; Hedrich v Standard Bank (CA), Gill v Humanware (CA), Mengiste v EFFORT (CA) [wasted costs]; FSA v Miller (FCA); GFSC v Several Individuals (GFSC) [Financial Services Regulation].


Called 1993, Grays Inn; QC 2008.




Canford School, Dorset; Emmanuel College, Cambridge (1992 BA Hons; 1996 MA).


Horse racing.

Lawyer Rankings

London Bar > Sport

(Leading Silks) Ranked: Tier 1

Graeme McPherson QC4 New SquareVery knowledgeable, and good to work with at a senior level.

A set with a ‘a very good reputation in the sports field‘, 4 New Square is active in sports discipline and anti-doping matters. 2019 silk appointment Daniel Saoul QC represented then-Toronto Wolfpack rugby league player Ryan Bailey, who was found to not be at fault for refusing a post-match drug test; the player suspected that bottles of water provided by the Canadian anti-doping authorities may have been interfered with. Kendrah Potts acted as sole counsel defending England cricketer Alex Hales in ECB disciplinary proceedings after his highly publicised involvement in a brawl after he and team-mate Ben Stokes intervened in a homophobic attack; Stokes was acquitted of affray in a criminal case arising from the same incident. Notably, a number of the set’s members have experience of elite sport themselves –Saoul QC is a former elite rowing cox, Graeme McPherson QC has had success as a race horse trainer, and Diarmuid Laffan is a former U21 Ireland rugby union international loose forward.

London Bar > Insurance and reinsurance

(Leading Silks) Ranked: Tier 4

Graeme McPherson QC4 New SquareHe is a brilliant advocate with a fantastic eye for detail.

London Bar > Offshore

(Leading Silks) Ranked: Tier 4

Graeme McPherson QC4 New SquareHis input into strategy demonstrates a robust and adaptable command of the tribunal process.

London Bar > Professional disciplinary and regulatory law

(Leading Silks) Ranked: Tier 4

Graeme McPherson QC4 New SquareHe has encyclopaedic knowledge of the papers and a sharp focus on the key issues of a case.

London Bar > Professional negligence

(Leading Silks) Ranked: Tier 1

Graeme McPherson QC4 New SquareVery user-friendly.