John Oliver

Year of Call: 2008

John is a barrister specialising in criminal and extradition law.

Our specialist clerks can be contacted by email on or phone on 020 7332 5400. To contact our Chambers Director directly in relation to a specific members’ practice, please email


John specialises in crime and extradition.


John has particular experience in cases involving drugs, sexual offences (including historic allegations), serious violence and dishonesty. 


He has an interest in cases involving vulnerable defendants and witnesses and has been instructed in cases involving the use of intermediaries to assist defendants with Autistic Spectrum Disorder and those with mental health conditions.


Direct Public Access

  • John accepts direct public access instructions in suitable cases. 

Professional Panel Appointments


  • John is an appointed level 2 CPS Prosecutor.

Criminal Defence

John has a busy criminal practice and is instructed in the full range of criminal offences.  


He has represented many young people at trial for serious offences in the Youth Court and Crown Court. 


John is regularly instructed in privately-funded cases, including driving cases.

“We are very grateful to John for his sound legal knowledge, advice and guidance.  His professional and personable attitude put all of us at ease.”

“We were very happy with John’s presentation and familiarity with our son’s case and the benefit of his legal knowledge, experience and attention to detail."

Feedback from the client's family following John's representation.

Criminal Prosecutions - Private & Public

John has a busy criminal practice and is instructed in the full range of criminal offences. John accepts Private Prosecution instructions. 


Extradition & International

John is an experienced extradition practitioner, having represented many requested persons at first instance and on appeal.  


Professional Discipline & Regulatory

John accepts instructions in Professional Discipline & Regulatory matters.

Inquests & Inquiries

John accepts instructions in relation to Public Inquiries and Inquests.

Cases of Note

R v W

Successful defence of a female jointly accused of grievous bodily harm (s.18) during an alleged knife attack on a neighbour.

R v A

Successfully defended a young man charged with sexual assault. His co-defendant was accused of rape on the same occasion.

R v W

Representing a young defendant with Autistic Spectrum Disorder in relation to a charge of assault with intent to commit a sexual offence (acquitted)

R v K

Instructed alone in a multi-handed conspiracy to convert criminal property involving the sale of appliances stolen from hardware stores across the country.

R v Oryem [2016] EWCA Crim 1699

Successful appeal against conviction and sentence for offences of fraud, possession of articles for use in fraud and possession of a false identity document with intent.

R v El Sheikh [2015] EWCA Crim 718

Successful appeal against sentence for possession of a prohibited firearm.