Roger Stewart QC > Chambers of Mark Cannon QC > London, England > Lawyer Profile

Chambers of Mark Cannon QC
4 New Square

Living Wage


Has a broad commercial practice with particular specialisation in international arbitration, insurance and construction as well as professional liability; recently acted in very substantial disputes for and against sovereign states as well as in private law claims. Recent cases include: Costain Ltd & Ors v Bechtel Ltd & Anor [2005] EWHC 1018 (TCC); Beary v Pall Mall Investments [2005] EWCA Civ 415; Multiplex Construction (UK)Ltd v Cleveland Bridge UK Ltd & Anor [2007] EWCA Civ 1372; Kamar v Nightgale & Anor [2007] EWHC 2982(QB); HLB Kidsons v Lloyds Underwriters & Ors [2007] EWHC 2699; Nationwide Building Society v Dunlop Haywards Ltd & Anor [2007] EWHC 1374 (Comm); Cherney v Deripaska [2007] EWHC 965 (Comm); Mirant Asia-Pacific Construction (Hong Kong) Ltd v Ove Arup & Partners International Ltd & Anor [2007] EWHC 918(TCC); Baxendale-Walker v The Law Society [2007] EWCA Civ 233; Fulham Leisure Holdings Ltd v Nicholson Graham Jones [2008] EWCA Civ 84; Cheshire Building Society v Dunlop Haywards (DHL) Ltd & Ors [2008] EWHC 51 (Comm), Mehjoo v Harben Barker, [2014] EWCA Civ 358, Gabriel v Little, [2013] EWCA Civ 1513, Clydesdale Bank v Workman [2013] EWHC 110, Amec v MOD [2013] EWHC 110, Capita v Drivers Jonas [2012] EWCA Civ 1417, Shepherd v Pinsent Masons [2012] EWHC 43, Trigger Litigation [2012] UKSC 14, Hawksford v Stella [2012] EWCA Civ 55, Harrison v Shepherd Homes [2011] EWHC 1811; City & General v Royal & Sun Alliance [2010] EWCA Civ 911.


Qualified 1986; Inner Temple; Bencher 2002; Junior Bench Auditor; publications: general editor of 5 to 7th editions in succession to Sir Rupert Jackson of ‘Jackson and Powell on Professional Negligence’; Silk 2001; Bencher 2002.




Oundle School; Jesus College, Cambridge (1985 LLM, 1986 MA).


National Liberal Club, Lost Valley Mountaineering Association, Serpentine Swimming Club.

Lawyer Rankings

London Bar > Construction

(Leading Silks) Ranked: Tier 1

Roger Stewart QC4 New SquareExcellent strategic instincts and wonderful advocacy.

4 New Square maintains a strong contractor clientbase and is ‘excellent for construction disputes‘. Roger Stewart QC provides ‘wonderful advocacy‘ for his clients. He is instructed by Sir Robert McAlpine in Sir Robert McAlpine v David Chipperfield Associates and Hoare Lea, a £35m claim by designers and builders in respect of design inadequacies and consequent delays. Ben Patten QC acts for the engineers in Volkerfitzpatrick Ltd v Stewart & Harris Ltd: Keller Ltd v Stewart & Harris Ltd, a dispute in the TCC arising out of alleged defective design and construction of a facility in Bristol.

London Bar > Insurance and reinsurance

(Leading Silks) Ranked: Tier 4

Roger Stewart QC4 New SquareHe is a formidable advocate with an impressive courtroom style.

London Bar > International arbitration: counsel

(Leading Silks) Ranked: Tier 2

Roger Stewart QC4 New SquareA brilliant advocate – no praise is too high.

London Bar > IT and telecoms

(IT and telecoms (excluding regulatory) - Leading Silks) Ranked: Tier 4

Roger Stewart QC4 New SquareA brilliant barrister with the ability to cut to the chase and analyse the essence of any issue.

London Bar > Professional negligence

(Leading Silks) Ranked: Tier 1

Roger Stewart QC4 New SquareA superb courtroom advocate, with a deft and commanding style.

Middle East: The English Bar > Construction

(Leading silks) Ranked: Tier 1

Roger Stewart QC4 New SquareThe counsel of choice for the biggest and most challenging cases.