Details of practice

Daniel has a broad practice across chambers’ areas of expertise with a particular focus on crime and a growing specialism in the field of regulatory and professional discipline.

Regulatory and professional discipline

Daniel has extensive experience in the field of healthcare regulation, representing both regulators and registrants. He appears before the General Medical Council (GMC), General Dental Council (GDC), Nursing and Midwifery Council (NMC) and the Health and Care Professions Council (HCPC). He is well-versed in the legal principles underpinning all healthcare regulators.

Daniel is regularly instructed by the GDC in cases of alleged misconduct concerning dentists and other dental care professionals. These cases typically involve complex clinical issues and the instruction of experts. Daniel is often instructed early in the investigation process, offering advice on all stages leading up to the final hearing. As well as appearing at substantive final hearings, Daniel also represents the GDC at interim order hearings.

In 2015 Daniel spent nine months on secondment in the Regulatory and Professional Discipline department of Kingsley Napley LLP. During his time with the firm Daniel was acting for the HCPC; one of the UK’s largest regulators, responsible for regulating over 15 different professions.

Daniel’s main role was presenting cases at fitness to practise hearings before panels of the Conduct and Competence Committee at hearing venues across England, Wales and Scotland. Daniel presented cases against a range of professionals including paramedics, chiropodists, dietitians, physiotherapists, psychologists, occupational therapists, radiographers, social workers and biomedical scientists.

These cases often involved technically complex allegations, vulnerable witnesses and expert evidence. As well as conduct and competence hearings, Daniel also represented the HCPC at voluntary removal hearings, consent order hearings and hearings before fitness to practise panels of the Health Committee.


Daniel regularly appears in the Magistrates’ Courts and Crown Court for both the prosecution and defence. He has acted for defendants charged with a range of offences including fraud, offences under the Gambling Act, importation of cocaine and other drug offences, motoring offences and inflicting grievous bodily harm. He has represented defendants in confiscation proceedings and restraint proceedings in the High Court.

As well as appearing regularly for the Crown Prosecution Service, Daniel acts for other prosecution authorities and public bodies. He appears regularly for Transport for London and represented a local Council in a complicated costs hearing arising from litigation concerning a nuisance abatement notice.


Daniel represents licensed premises as well as the Metropolitan Police in closure order proceedings. He is regularly instructed by Transport for London in taxi licensing appeals brought at both the Magistrates’ Court and Crown Court and has extensive knowledge of the statutory regime governing private hire vehicle licences.


Daniel appears on behalf of requested persons in extradition cases involving requests from Category 1 territories (ie requests under the European Arrest Warrant system) and Category 2 territories. He has acted in cases involving challenges to extradition on grounds including mistaken identity, dual criminality and human rights.

Daniel developed expertise in extradition law as the Policy Officer at the human rights NGO Fair Trials International. This involved extensive work on the organisation’s campaign on the European Arrest Warrant, which included drafting proposed amendments to the Extradition Act 2003 and giving evidence to the Government’s Extradition Review Panel.


Education/professional qualifications

Bar Professional Training Course (Outstanding)
LLB (First)
MA (Cantab) Queens’ College, Cambridge

Middle Temple Certificate of Honour (2012, for BPTC results)
Winner, the College of Law Plea in Mitigation Competition (2012)
Middle Temple Astbury Scholar (2008 and 2011)
Human Rights Lawyers’ Association Bursary (2010)


‘The European Arrest Warrant and Defence Rights’, European Criminal Law Review, 2012

‘The European Investigation Order:  Changing the face of evidence-gathering in EU cross-border cases’, New Journal of European Criminal Law, 2011, co-author

‘The European Arrest Warrant:  The Role of Judges When Human Rights are at Risk’, New Journal of European Criminal Law, 2011, co author

Other information

Before coming to the Bar, Daniel was the Policy Officer at the human rights NGO Fair Trials International (FTI), where he assisted in the formulation of the organisation’s policy stance on fair trial issues and helped deliver campaigns on extradition, pre-trial detention and international evidence-sharing. This work involved arguing for defence rights at meetings with the Foreign and Commonwealth Office, the Home Office and the European Parliament.

Before working at FTI, Daniel spent a year as a paralegal in the crime department of a leading firm of solicitors. Daniel worked on a range of cases from racially aggravated public order to murder. While at the firm Daniel worked extensively on a large-scale VAT fraud (a so-called MTiC fraud or “carousel” fraud), which involved the circulation of dummy orders of mobile phones around the EU.

While undertaking his legal training Daniel volunteered for the human rights organisation Liberty and represented clients on a pro bono basis at social security hearings with the Free Representation Unit. He also volunteered for the Witness Service at the Old Bailey, supporting victims of crime, their family members and witnesses.

Direct access

Daniel Mansell is qualified to accept instructions direct from clients under the Bar Council’s Public Access Scheme. This means that members of the public who seek specialist advice can come direct to him. In addition he welcomes instructions from solicitors, in-house law departments, qualified foreign lawyers, and clients licensed by the Bar Council to give instructions direct to barristers under the Bar Council’s Licensed Access Scheme.

For further information please contact our Clerks.