Read more Notable cases
Rhiannon is a dynamic advocate with broad experience in criminal, court martial and regulatory law. A persuasive negotiator with exceptional communication skills, she is analytical, pragmatic and personable – and puts her heart and soul into cases.
She has been recommended in Chambers & Partners every year since 2009 – as well as in Legal 500.
Background and expertise
Rhiannon is a Grade 3 prosecutor, regularly appearing at Crown courts to prosecute complex cases including conspiracies, serious violent and sexual offences, and fraud.
Her defence practice has taken Rhiannon all over the country. She has successfully defended in a succession of ‘multi-handed’ drugs cases including conspiracy to supply cocaine; conspiracy to supply cannabis, involving an international plot to import goods from the Caribbean; and conspiracy to cultivate cannabis.
Other notable successful defence instructions have included trials relating to honour-based kidnap and false imprisonment; cigarette smuggling; and firearms.
Rhiannon is a highly skilled junior and has been led in cases at both the Court of Appeal and Crown Court – including murder; conspiracy to defraud; conspiracy to steal and handle stolen goods; and conspiracy to traffic people.
She conducts her practice with enthusiasm, professionalism and skill – irrespective of case, client or location.
Junior counsel for Crown in five-handed trial for conspiracy to steal and conspiracy to handle cars and parts worth in excess of £500,000. Case involved extensive covert surveillance and expert evidence; Rhiannon was commended for preparation of extensive schedules for use in presenting the case to the jury.
Other Activities and Interests
- Speaker for schools
Professional commentary and attribution
“Regularly instructed to prosecute cases concerning fraud, as well as serious sexual and violent offences. She also defends a wide variety of cases, including those involving child sexual abuse and multi-handed drugs conspiracies.
"She is very calm and measured, and she shows very good judgement."
"Rhiannon is a dynamic prosecution and defence advocate with broad experience at all levels of criminal law. She has an outstanding reputation, a strong work ethic and excellent organisational skills."
"She is a highly regarded junior and has been led in a multitude of cases including a 3-month long conspiracy to steal, a conspiracy to defraud the Secretary of State involving international visa fraud, as well as murder, both prosecuting and defending."
"She is a persuasive negotiator with exceptional communication skills and experience in handling highly sensitive cases. She has a keen interest in honour based crimes and successfully secured an acquittal for a father accused of honour based kidnap and false imprisonment."
"Rhiannon is lauded for her willingness to go the extra mile and delivery at the highest of standards. She is a Grade 3 prosecutor and routinely briefed in both London and the Provinces. She has a proven ability to adapt quickly to new and complex environments and thrives under pressure."
Chambers UK, 2018
PROFILE: Rhiannon Sadler
“A very capable advocate with a mixed criminal practice…hard-working, diligent and very intelligent.”
Chambers UK, 2015 and 2016
Fraud, Bribery & Corruption
Regulatory / Disciplinary
020 7489 2727
BVC, The College of Law, London, 2003–04
LLB (Hons) in Law, Kingston University 2000–03
CBA, South Eastern circuit, Sussex Bar Mess, North London Bar Mess
Grade 3 prosecutor
Association of Military Court Advocates – committee member