Jon Swain

Jon Swain

Call: 1983


I am a highly experienced junior, with a practice including leading in significant complex, multi-defendant cases. I have featured annually as a ‘Leading Junior’ in Chambers and Partners for many years, reflecting my high standing amongst instructing solicitors and their clients.
I have appeared for both prosecution and defence, concentrating more recently in representing defendants in serious crime, in courts throughout England, and so have extensive experience in the complexities of the developing areas of criminal law.

I have led in multi and single defendant murder trials, substantial fraud and money laundering trials, and other categories of serious crime such as drugs importation and supply, and vehicle related crime, over recent years. This has meant that I have developed the ability to recognise the tactical requirements in a huge variety of different situations within both single defendant and multi defendant trials. In combination with the ability to assimilate and understand the significance of vast quantities of documentary exhibits, which are a characteristic of modern trials, I am equipped to deal with the requirements of representing lay clients who face long and complex trials.

I have led, and been led, in many murder cases, ranging from gangland executions to sexually motivated killings, and those with special defences such as provocation and diminished responsibility.

I have led in very complex fraud and money laundering cases, including defendants who were professionals, such as solicitors and chartered accountants, and so have an understanding of the practices involved. I am computer literate; an essential attribute in preparing and presenting such cases before the courts. I have been instructed in cases involving bureau de change, where substantial sums were said to be paid through such organisations in order to launder the proceeds of crime by conversion between currencies.

I pride myself on thorough preparation, and the ability to communicate effectively, and sympathetically, with lay clients from all backgrounds, which I have always believed to be an essential element of the task of the barrister.

"Jon is undoubtedly top of his class both as a courtroom advocate and a lawyer. He is exceptionally gifted in his ability to cut through the chaos and confusion often found in paper-heavy cases and explain the key issues in a simple-to-understand formula. Jon is excellent with clients and is a well-liked advocate with a pleasant but robust courtroom manner."-Legal 500, 2024
"Jon is a very good, hardworking, diligent advocate."-Chambers UK, 2024
Recent Cases

R v Kazmierski (2023) Very complex allegation of joint enterprise murder, with 4 + hours of CCTV as a compilation alone, of highlights selected by the Crown. Gang warfare in East London, with a number of linked murders.

R v Andrew Francis  (2023) Allegation of murder in extremely unusual circumstances. Burglar unexpectedly encountered elderly occupant and alleged to have assaulted him, resulting in death 9 days later. Complex pathology with pathologists, consultant neuropathologist, consultant radiologist, consultant cardio pathologist all giving evidence. News story here

  • Legal 500 leading junior 2024