The Legal 500

Chambers of Mark Ellison QC

Work 020 7933 8855
Fax 020 7929 3732

Mark Ellison QC

Work 020 7933 8855
QEB Hollis Whiteman (Chambers of Mark Ellison QC)


Having worked in serious fraud for many years during his time as Treasury Counsel (appointed 1994), then First Senior Treasury Counsel (appointment ended 2008), Mark Ellison gained valuable further experience acting in high-profile terrorism, serious fraud, serious crime, corruption and public law cases. He now mixes private and public work, and has recently: defended in the first OFT prosecution for a cartel offence under the Enterprise Act 2002; advised foreign nationals on immigration, extradition and domestic crime-related matters; advised on employee and competitor fraud-related issues; advised in connection with investigations and disclosure issues; and advised the Home Office in relation to the possible admission of intercepted communications as evidence in proceedings and carried out an independent review of undercover policing and possible police corruption connected to the Stephen Lawrence case for the Home Secretary. As Treasury Counsel and Senior Treasury Counsel, he advised and acted in high-profile and complex terrorist, official secrets and other sensitive cases. His work involved: complex serious fraud connected to funding terrorism; corruption in public and private bodies; extradition; third party disclosure involving UK and foreign authorities, individuals, companies and journalists; trial secrecy and press freedom issues; contempt of court; admissibility and gathering of foreign evidence, including intercept; medical and corporate manslaughter; advice on prosecuting members of political parties for donation offences; and public, international, and domestic criminal law issues connected to the alleged illegality of the war on Iraq. He has conducted cases at all levels in the courts and has advised on and conducted a number of professional conduct cases before the General Medical Council.


Called Grays Inn 1979; QC 2008. Head of Chambers QEB Hollis Whiteman. Mark Ellison was invited to become Treasury Counsel in 1994, after having advised and acted for both the defence and prosecution in a number of high-profile serious fraud cases, including Guinness and Blue Arrow; and corruption involving North Sea oil and Channel Tunnel contracts. He was appointed First Senior Treasury Counsel in 2006. Having gained extensive experience that is directly relevant to many private practice areas, his appointment as First Treasury Counsel ended in 2008.


Past chairman of Bar Council remuneration and terms of work committee; Bar Council member of the Criminal Justice Council; registered with the Bar Council Public Access Directory; Public Access Bar Association (PABA).

London Bar

Business and regulatory crime (including global investigations)

Within: Business and regulatory crime (including global investigations) – Leading silks

Mark Ellison QC - QEB Hollis WhitemanAn impressive strategist who comes up with practical solutions.’

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Within: Crime – Leading silks

Mark Ellison QC - QEB Hollis WhitemanGets right to the heart of the issue.’

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Fraud: crime (including money laundering and asset forfeiture)

Within: Fraud: crime (including money laundering and asset forfeiture) – Leading silks

Mark Ellison QC - QEB Hollis WhitemanBright and authoritative.’

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