1MCB is perhaps most renowned for its specialist criminal work. The crime team is the largest team in Chambers. Members provide the highest quality representation at all levels of seniority. Whether a particular case requires Queen’s Counsel, a senior junior, or a more junior barrister, 1MCB offers a friendly, practical, expert but above all professional service. As well as providing great expertise in terms of pre-trial advice on evidence and preparation, and advocacy at trial, members of the crime team are regularly instructed to present appeals in the High Court, Court of Appeal, the Supreme Court, and the Privy Council.

Chambers' crime team is widely recognised for its exemplary and tenacious defence work. Some members now prosecute as well. The crime team is utterly committed to the principle of access to justice, and prides itself on its reputation for being professional yet approachable.

The crime team can provide particular expertise in cases involving white-collar crime. The team has considerable experience in corporate and commercial fraud, insider-trading and cases with an international dimension. Clerks to the crime team can give details about team members' recognised expertise in cases involving disclosure of foreign evidence.

Members of the crime team are regularly instructed in cases of homicide, organised crime, drug trafficking, money laundering, terrorism, and cases involving the prosecution of police officers. It is appreciated in Chambers that cases involving allegations of sexual violence, and particularly when such cases involve children, require expertise combined with sensitivity. Many members of the crime team have considerable experience in this area. Some members practice almost exclusively in rape and serious sexual assault cases.

The crime team provides a great deal of experience in cases involving confiscation and forfeiture proceedings, and judicial review arising out of criminal cases. Continuity of representation is recognised as of enormous importance, irrespective of the seriousness of the allegation faced by the lay client.

Members of the crime team are also regularly instructed in inquiries, including the Scarman Inquiry into the Brixton riots, the Bloody Sunday Inquiry, the Lawrence Inquiry, the Virdi Inquiry, the Essex University Student Protests Inquiry, the Inquiry into the shooting of Catholic youths in Derry, the Broadwater Farm Inquiry, the inquiry into the use of supergrasses in Northern Ireland Courts, the Laudat Mental Health Inquiry and the Nye Bevan Inquiry.