Mark is a specialist in all areas of extradition and mutual assistance, international law and EU law. He is recommended as a leading junior in extradition law by Chambers & Partners.
Mark is regularly instructed to appear on behalf of, and advise, individuals and foreign governments in proceedings in the United Kingdom and abroad. Mark is experienced in the drafting of European Arrest Warrants / non-EU requests. He is vice-chair of the Extradition Lawyer’s Association.
In addition to the theft of a wardrobe door and possession of a sleeping pill, his cases have included ● 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 ● two defendants on the FBI’s "10 most wanted" list.
Mark's current extradition caseload includes ● Portugal v Garry Mann (instructed by Fair Trials International) ● Basque nationalist terrorism allegations ● advising the Attorney General of Jersey in the Island's first 2004 Law case ● advising in proceedings in India ● requests concerning serious fraud prosecutions in Hong Kong, USA, Kenya, Italy ● Leading counsel in Edwards v UK pending before the European Court of Human Rights.
Chambers and Partners and the Legal 500 also consistently rank Mark as a leading junior in crime and regulatory work. Noted as “attracting attention from colleagues and judges alike, due to the quality of his performances...Those who have led Summers consider him to be absolutely exceptional, a genuinely clever lawyer”. Since 2008, he has been ranked amongst the top 15 juniors in London and is noted as having “handled high-profile cases...a stunning addition to any team - with pep and industry to spare”.
Mark has represented senior judiciary in proceedings before the Privy Council and is particularly experienced in the conduct of abuse of process submissions in domestic cases concerning defendants brought before the jurisdiction by irregular means and in circumvention of extradition procedures. The spectrum of trials that he has conducted include ● murder (including the defence of “supergrasses”) ● human trafficking ● child abduction ● perverting the course of justice ● serious fraud ● the Burnley and Bradford 2001 race riots. Mark's present cases include advising the Public Solicitor of St. Helena & Ascension on the operation of the fair trial provisions of the Islands' new Consitution.
Mark’s criminal practice has a particular focus on anti-terrorism and cases concerning complex cross-border and jurisdictional issues. His terrorism caseload has recently included ● the 21/7 London bombing attempts ● R v Tsouli (aka "terrorist007" - reputed to be Al-Qa’eda's ”webmaster” and “cyber-Muhajid”) ● the 'ricin' conspiracy ● the murder of DC Oake ● the Stansted Airport Afghan Airlines hijacking ● offences under the Terrorism Acts of 2000 and 2006’ ● production of chemical weapons and explosives ● international economic sanctions freezing orders.
Mark's ongoing terrorism cases include “Operation Overt”; the 2006 alleged Heathrow airline liquid bomb plot.
Mark is the co-author of “Young, Summers and Corker on Abuse of Process in Criminal Proceedings”, 3rd. Ed. Bloomsbury, 2009.