Michael Mason

Michael Mason

Call: 2007


Mike Mason is both a barrister and a qualified accountant having trained with one of the ‘big four’ accountancy firms. He is a forensic accountant, formerly heading up the forensic accountancy department of BDO LLP in Southampton.

Mike has been cross examined on numerous occasions as an expert accountant and this experience has especially equipped him for his own cross examination of experts.

He is a direct access barrister.

Fraud & financial crime

Mike is a Grade 3 member of the CPS Specialist Fraud Panel and has been instructed for them on several cases on the Western Circuit and in London.

As a qualified accountant he has an excellent understanding of accountancy, financial statements and of finance generally. As an expert accountant he has gained particular expertise in the cross examination of financial experts.

Mike has been involved in many fraud investigations. He was for eight years the external forensic accountant for the Ministry of Defence Police Fraud Squad and assisted them on a number of significant investigations. He has accompanied the police on raids of premises and has advised on documentation and evidence.

He has conducted bribery investigations under the Bribery Act 2010.

He is an Accredited Counter Fraud Specialist (ACFS) and has advised a number of hospital trusts on fraud prevention and detection, and has assisted in the investigation of fraud for the hospitals.

  • Portsmouth Crown Court (financial crime) – Successful prosecution of Sammy Kimmence, Dani Dyer’s boyfriend, who was given 42 month prison sentence for defrauding pensioners. The defendant posed as a financial investor and took money from two men, aged 81 and 91, claiming he would invest it by placing horse-racing bets.  Instead he took their money and spent it on paying off his own debts and funding his lifestyle.Case reported at:Dani Dyer is flying off on HOLIDAY as she ignores boyfriend Sammy Kimmence’s three and a half year prison sentence (thesun.co.uk)Sammy Kimmence: Former trader jailed for defrauding pensioners – BBC News
  • Southampton Crown Court (evasion of Excise Duty of £1.3 million) – successful prosecution of a man who had been part of a criminal gang distributing illegal cigarettes upon which no Excise Duty had been declared.
  • Portsmouth Crown Court (tax fraud)–  successful prosecution with HMRC and the CPS Specialist Fraud Division of an individual who had falsified tax returns to obtain considerable tax repayments under HMRC’s Construction Industry Scheme.
  • Portsmouth Crown Court (financial crime)– successful prosecution of a former Royal Navy veteran and MBE was successfully prosecuted for the theft of his step-son’s £59,000 inheritance. Over a three-year period, he began transferring numerous cash sums, to accounts overseas and hiding the theft from his fellow trustees.
  • Bournemouth Crown Court (financial crime)– the defendants were successfully prosecuted with the theft of takings from their employer. Both defendants were responsible for the collection and security of cash in the business and stole a significant sum of money. The case involved 5 days of legal argument regarding abuse of process before it concluded with guilty verdicts after a six-day trial.
  • Southampton Crown Court (financial crime)– successful prosecution of a benefits fraud which had been carried out for many years with substantial sums stolen. Evidence demanded knowledge and understanding of the benefits system over the period of the fraud – Guilty verdict.
  • Southampton Crown Court (financial crime)– prosecution of a carer accused of unauthorised use of the credit card and cash of the 93-year-old woman he was caring for.

Money Laundering & Proceeds of Crime

Mike was a member of BDO’s Forfeiture and Asset Recovery team and obtained an excellent working knowledge of confiscation under POCA. As a barrister he assists the CPS and defendants with confiscation matters and hearings. His understanding of accountancy and finance is of great practical use in this area.

He has assisted both the Crown and defendants in contested POCA hearings and in drafting s17 responses.

  • Portsmouth Crown Court – the prosecution of 8 defendants in a money laundering investigation (led by Barry McElduff).
  • Swindon Crown Court (POCA) – prosecution of 5 defendants in drugs conspiracy – agreement obtained for substantial recovery of proceeds of crime.
  • Southampton Crown Court (evasion of Excise Duty of £1.3 million) – successful prosecution of a man who had been part of a criminal gang distributing illegal cigarettes upon which no Excise Duty had been declared and corresponding money laundering crimes.
  • Cardiff Crown Court – defence of substantial POCA proceedings emanating from tax and trading standards fraud. This case involved the preparation of defence statements and negotiations with the Crown to secure an acceptable confiscation amount.


Mike is a Grade 3 Prosecutor for the CPS and is regularly instructed in Crown Court trials, in particular on the Western Circuit, East Sussex, Buckinghamshire and in a number of London Courts.

He has successfully appeared in the Court of Appeal for both prosecution and defence.

  • Southampton Crown Court (membership of organised crime group) – successful prosecution of a criminal gang, involving drug conspiracy and money laundering.
  • Portsmouth Crown Court (drugs conspiracy)- successful prosecution of a drug dealer who along with others operated a “county line” from London selling class A drugs in the Hampshire area. He was sentenced to 9 years in prison.
  • Winchester Crown Court (arson with intent) – successful prosecution of a woman who maliciously burnt down the place of her employment knowing there were persons living above
  • Reading Crown Court (indecent images of children) – successful prosecution of a student accused of accessing hentai (cartoon) pornographic images of children. This case went to the court of appeal concerning the Sexual Harm Prevention Order that had been breached; Appeal Court found in favour of the Prosecution.
  • Aylesbury Crown Court (ram raiding offences) – successful prosecution of a man accused of using a pick-up truck to smash through the entrance of a hospital and then ripping out the ATM machine, second similar offence followed. Guilty verdicts returned.
  • Aylesbury Crown Court (Drink Driving prosecution – 4-day trial involving expert evidence regarding the breathalysing machinery employed by the Police. Appeal dismissed, with considerable costs awarded to the Crown.
  • Lewes Crown Court (dangerous driving of a bus driver)successful prosecution of a bus driver accused of extremely dangerous driving by driving a bus through a railway crossing endangering the lives of his passengers, other drivers and members of the public. Guilty verdict returned.
  • Bristol Crown Court (sexual crime) – defence of a man prosecuted for counts involving allegations of historic rape and sexual assault against two children.
  • Worcester Crown Court (violence)– defence of an inmate who had attacked prison officers in the high security wing of the prison, causing severe injuries. The client refused to come to court and so the case was conducted entirely in his absence; not surprisingly he was found guilty.
  • Bournemouth Crown Court (violence)– defence of woman prosecuted with two co-defendants for serious assault on a family member. Guilty verdicts but sentence successfully appealed.
  • Winchester Crown Court – Successful prosecution of a woman who, as a part of a gang, had illegally brought just under £500,000 worth of cocaine through Heathrow Airport.

General civil & commercial

Mike has expertise in assessing losses and damages in civil cases including personal injury and commercial cases.

Mike has a good working knowledge of financial matters. He has recently advised a PLC on whether to appeal the decision of the High Court regarding international loan agreements and fresh evidence produced by one of the parties. This was a complex case involving the assessment of accounting records, the treatment of assets under International accounting standards, the impairment of debt, and the compilation of consolidated accounts.

He has appeared at a Coroner’s hearing to assist in the investigation of the death of a man who died during an operation.


Mike regularly conducts forensic and legal training for a number of organisations and law firms. He was responsible for many years in running the Bar Standards Board Forensic Accounting course which was compulsory for all barristers within 3 years call.

He regularly conducts training on cross examination skills for fraud investigators as part of the Accredited Counter Fraud Specialist course.

He has conducted training in New Zealand and in Budapest for the International Academy of Matrimonial Lawyers on the cross examination of experts. He has also conducted training in Malaysia and Dubai for fraud investigators.


  • LLB (First Class Hons)
  • BVC (Very Competent)
  • BA (Hons) Psychology
  • FCCA (Fellow of the Association of Chartered Certified Accountants)


  • CPS Specialist Fraud Panel, Grade 3
  • CPS General Crime Panel, Grade 3
  • CFS (Accredited Counter Fraud Specialist)
  • Member of the Criminal Bar Association


14 Jul 2021

Sammy Kimmence, Dani Dyer’s boyfriend, given 42 month prison sentence for defrauding pensioners – Michael Mason prosecutes

The defendant posed as a financial investor and took money from two men, aged 81 and 91, claiming he would invest it by placing...

3 Feb 2020

Mike Mason prosecutes boyfriend of Love Island star

Love Island star Dani Dyer's boyfriend has appeared in Portsmouth Crown Court charged with being involved in an investment business with intent to defraud...

12 Jul 2019

Mike Mason prosecutes Royal Naval Officer for “despicable” dishonesty

The defendant was convicted of stealing money left to his stepson by his stepson's father as his inheritance. The defendant was imprisoned for three...

1 Oct 2015

Mike Mason to speak at the International Academy of Matrimonial Lawyers conference in New Zealand

Chambers are proud to announce that Mike will be speaking in Dunedin, New Zealand in October at the International Academy of Matrimonial Lawyers Conference....


Crime Team

+44 20 7353 1746