Fiona McAddy

Year of Call - 2011

Full Profile

Fiona accepts instructions in all areas of Chambers’ practice and has a particular interest in criminal law.

Fiona has defended in a broad spectrum of offences before the Crown Court and maintains an interest in cases involving offences of serious violence or fraud. She has a particular interest in the potential legal complexities involved in indictments alleging conspiracy and has been instructed to advise on conspiracy matters both in this jurisdiction and abroad.

As a result of her interest in the law relating to conspiracies, Fiona has been instructed as led Junior in a number of factually complex and paper heavy fraud matters involving multiple agreements, transactions and defendants. She takes pride in her reputation for competence and efficiency in such cases.

Consequentially, Fiona has a steadily increasing practice involving contested applications under the Proceeds of Crime Act, and remains a firm believer in the benefits of providing early advice in such cases.

Fiona continues to accept instructions to appear before the Youth Court for defendants charged with serious offences. As a consequence, she is regularly instructed on behalf of young and vulnerable defendants who consequently appear before the Crown Court for trial, charged with matters ranging from murder to rape and arson.

Fiona has appeared before the Court of Appeal in relation to appeals against conviction in relation to the framing of conspiracy indictments, and appeals against sentence in relation to a variety of matters, including dangerousness, and Article 8 considerations.

Fiona is a Grade 2 CPS prosecutor, and has prosecuted matters ranging from s.18 GBH, offences involving serious public disorder, sexual assault, large scale drug importation and fraud. She is also instructed by the Serious Fraud Office as disclosure counsel in SFO v Rolls Royce, and has been instructed by the Financial Conduct Authority as LPP counsel on a number of operations.

Because of her expertise in serious criminal offences, Fiona is also instructed to appear for parents at fact finding hearings before the Family Court. To that end, she has represented parents accused of serious criminal conduct including campaigns of rape and attempted murder.
Fiona also accepts instructions to appear before the Coroners Court on inquest matters.

She continues to write and lecture on a variety of topical criminal issues, and enjoys the theoretical aspects of criminal law.

Fiona plays an active role in the profession outside of the courtroom; she is a member of Chambers’ Management Committee and she is the Herts and Beds Bar Mess Representative to the South Eastern Circuit Executive Committee.


(2016) “The Modern Conspiracy – The Problem with Persons Unknown” – co-authored with Colin Witcher

(2016) “Shaken Baby Syndrome – The Development of Expert Evidence” – co-authored with Jo Morris

(2016) “Courts Martial and the Human Rights Act” – co-authored with Jo Morris

(2016) “Shaken Baby Syndrome – Practical Considerations” co-authored with Jo Morris and published by Crimeline

(2016) “Coercive Control” – co-authored with Jo Morris and published by Crimeline


(2016) “The Military Court Martial – An Outline of Military Jurisdiction” – Chambers Lecture Series.

(2016) “Shaken Baby Syndrome” – Chambers Lecture Series

Awards and Appointments

CPS Grade 2

SFO disclosure panel

FCA LPP panel

Vulnerable Witness Training completed – 2018

Inner Temple Exhibition Award 2010

Professional Memberships

South Eastern Circuit

Criminal Bar Association

Bar Pro Bono Unit

Inner Temple


Ga (fluent)

French (basic)



Cases of note

  • criminal law
    R v DL (Central Criminal Court) [2018]

    Led Junior – Defendant unanimously acquitted of a gangland murder. DL was one of five defendants who faced trial for the slaying of a 15 year old boy in Croydon. DL was the only defendant to be unanimously acquitted of murder and manslaughter.

    R v CM (St Albans Crown Court) [2018]

    CM was unanimously acquitted of arson with intent to endanger life. CM accepted in evidence that he had sent his ex partner a threat to burn her house down, that he had attended her house with a can of petrol and that he had then set the property on fire whilst the occupants were asleep upstairs.

    R v HM & NA (Isleworth Crown Court) [2018]

    Successful prosecution of two defendants for the large scale importation of Class C drugs.

    FH v R (Court of Appeal, Criminal Division) [2018]

    Successful appeal against conviction in relation to the sentence imposed for dangerous driving.

    R v RM (Blackfriars Crown Court) [2017]

    Defendant unanimously acquitted of 3 counts relating to cruelty to two children. The defendant was said to have tortured the two children by burning them.

    R v MS (Isleworth Crown Court) [2016]

    Defendant unanimously acquitted of attempted s.18 GBH. The Crown alleged that he had deliberately driven his car at his ex partner’s new boyfriend on an empty road.

    R v OV & Ors (Huntingdon Crown Court) [2016]

    Led junior in case involving conspiracy to acquire criminal property. Case was noteworthy for its factual complexity.

    EW v R (Court of Appeal, Criminal Division) [2015]

    Successful appeal against 12 year custodial term for rape. Reduced to 8 years and 6 months.

    R v KM (Chelmsford Youth Court) (2015)

    Successful prosecution of a youth under s.16A Firearms Act 1968 arising out of an incident where a 15 year old with severe learning difficulties had been threatened with a firearm in a car park.

  • family law
    W v W (Central Family Court) [2015]

    Proceedings involving residence, contact, a previous abduction of one of the children, and a potential future abduction.

    RA v SS [2015]

    Fact finding hearing involving 11 allegations of rape, allegations of assault and suffocation of a child.

  • civil law

    Instructed by the Treasury Solicitor’s Department on large scale, ongoing litigation as part of the BB scheme.

    Treasury Solicitor’s Department

Shortlist ( )

Criminal Law

Business Crime


Immigration Law

Regulatory and Disciplinary Law

Sports Law