Mark Summers QC

Called 1996 Silk 2014
Mark Summers

Extradition, EU law and mutual legal assistance
Mark is a specialist in all areas of extradition and mutual assistance, international law and criminal EU law. Chambers & Partners 2014 ranked Mark as the "star individual" junior of the extradition Bar. He was noted for his ability " get around complex legal issues incredibly quickly…" and as " encyclopaedia on extradition law…what he doesn't know isn't worth knowing..." (Chambers & Partners 2014). Legal 500 also notes his "...encyclopaedic knowledge of extradition...".
Mark is regularly instructed to advise and appear on behalf of individuals and foreign governments in proceedings in the United Kingdom and abroad. He is a committee member, and former Chair, of the Extradition Lawyers' Association
His cases have included ● Sweden v Julian Assange  ● South Africa v Shrien Dewani  ● Bucnys v Ministry of Justice ● the attempted Regicide of the King of Spain ● Edwards & Harkins v United Kingdom ● Woolley v United Kingdom ● the Madrid train bombings  ● the 9/11 attacks  ● the ‘fertiliser’ bomb plot  ● the 2001 US anthrax bio-terrorism attacks  ● the financial collapse of Enron (the “NatWest 3”) ● the murder of Theo van Gogh  ● the creation of the 'Trojan Horse' commercial espionage computer virus  ● the French Elf Oil Co. political corruption trial  ● hacking into the Pentagon and Pearl Harbour and NASA computer networks  ● $31million US 'Ponzi scheme' advance fee fraud  ● $55million financial derivatives fraud  ● $300million US ‘pump and dump’ stock fraud  ● the sale of decommissioned radioactive metals  ● KGB espionage in the former Soviet bloc  ● treason  ● impairing the battle-readiness of the US Atlantic fleet  ● defendants on the FBI’s "10 most wanted" list. 
Mark's current extradition caseload includes ● ETA membership ● genocide ● the Kenyan Triton petroeum fraud ● advising in ongoing proceedings in India, Switzerland, Israel, Egypt and the UAE.
Crime and regulatory
Chambers and Partners and the Legal 500 have also consistently ranked Mark as a leading junior in crime and regulatory work. Mark is noted as " of the most highly recommended juniors at the Criminal Bar…" who "...has a flourishing practice that covers terrorism and appellate work…" and is "...great on technical legal points..." (Chambers and Partners, 2014). Legal 500 observes that Mark is "...very effective in court...".
Mark has represented senior members of both the Bar and Judiciary as defendants in criminal proceedings, including proceedings before the Privy Council. He is particularly experienced in the law of abuse of process, including irregular extradition and breach of specialty. 
The broad spectrum of Mark's criminal trial and advisory work includes ● defending in the Pakistani cricket spot-fixing trial ● death row litigation before the Privy Council ● advising the Public Solicitor of St. Helena & Ascension on the operation of the fair trial provisions of the Islands' new Constitution.   
Mark's current crime and regulatory caseload includes ● allegations of sanctions evasion ● intervening before ECtHR in proceedings concerning the death of Jean Charles de Menezes ● proceedings concerning the legality of the policing of the Royal Wedding ● ECtHR proceedings arising from Spanish investigatory proceedings ● advising Libyan nationals concerning allegations of torure and rendition
Mark’s extradition, MLA and general criminal practices all have a particular focus on anti-terrorism and cases concerning complex cross-border and jurisdictional issues. His terrorism trial caseload before the UK courts has recently included ● the 1982 Hyde Park IRA bombing ● Syrian fundraising ● "operation Examine"; terrorist fundraising and suicide plot to attack unknown targets in the UK  ● "operation Norbury"; the plot to blow up the London Stock Exchange ● “Operation Overt”; the 2006 Heathrow airline liquid bomb plot  ●  the 21/7 London bombing attempts  ● R v Tsouli (aka "terrorist007" - reputed to be Al-Qaeda's ”webmaster” and “cyber-Muhajid”)  ● the 'ricin' conspiracy   ● the murder of DC Oake  ● the Stansted Airport Afghan Airlines hijacking  ● production of chemical weapons. 
Mark's current terrorism caseload includes the alleged Remembrance Day plot to behead a member of the public.


  • Contributing editor to "Fraud: Criminal Law and Procedure", Montgomery & Ormerod, Looseleaf, OUP.                                                                              

Mark accepts instructions under the Bar Council Standard Contractual Terms, details of which can be found here.