Cressida’s practice encompasses the full range of Chambers’ key specialisms, acting for Claimants and Defendants. She successfully acted as Junior counsel (led by Patrick Vincent QC) for the Second Defendant in Covea Insurance Plc v Greenaway & Others [2021] 3 WLUK 379, the first case to practically consider how the domestic court is to interpret retained EU law under section 6(3) of the EU Withdrawal Act 2018.

Her practice focuses on all aspects of domestic and international personal injury litigation, including product liability, industrial disease, inquests & clinical negligence. She is experienced in related insurance (including fraud and fundamental dishonesty) and costs matters.

Cressida is an effective advocate successfully appearing in the High Court (led), the Coroner’s Court (unled) and in cost-only proceedings (unled). She worked with the leading traumatic brain injury expert Professor William Stewart during an inquest where she successfully questioned experts in pathology, neuropathology, and toxicology.

Prior to coming to the Bar Cressida worked at a top American investment bank. This informs her understanding of the interrelationship between insurance and risk in all aspects of litigation. She handles complex issues of quantum (including pension loss) beyond her year of call.

Her Articles and commentary are regularly published by Lexis PSL and the Travel Law Quarterly.

Industrial Disease
  • Settled a high-value NIHL claim where the Claimant has been rendered ‘disabled’ within the meaning of the Equality Act and for the purposes of Ogden 8 future losses.
  • Drafted Particulars of Claim in a fatal mesothelioma case (devilling).
  • Advises in claims for asbestosis.

Regular contributor to the Asbestos law blog and is keen to build her own practice in this area.

International & Travel
  • Junior counsel (led by Patrick Vincent QC) for the Second Defendant in Covea Insurance Plc v Greenaway [2021] 3 WLUK 379, the first case to practically considered how the domestic court is to interpret retained EU law under section 6(3) of the EU Withdrawal Act 2018.
  • Advises and drafts statements of case in Montreal convention claims.
  • Advised on recovery prospects under a contract by a tour operator against a supplier for claims brought under the Package Travel Regulations 1992.
  • Acts in claims brought under Regulation 261.
  • Assisted (as a pupil) with appellate proceedings considering the meaning of ‘debtor’ under s.75 of the Consumer Credit Act 1974.
  • Adept to deal with issues of jurisdiction and service post Brexit.
  • Intermediate French and conversational Spanish.

Regular contributor to 12 King’s Bench Walk’s International and travel blog.

Personal Injury
  • Appears / advises in a range of fast-track and multi-track personal injury matters (EL, PL, RTA, OLA, Highways Act).
  • Advises in conference with multiple experts.
  • Incisively cross-examines expert and lay witnesses.
  • Appears in multi-party multi-track CCMC hearings.
  • Advises on complex issues of disclosure, both in and out of the jurisdiction.
  • Successfully acted (pro bono) for a Claimant in fundamental dishonesty proceedings: Czarnecka v Munteneau (unreported), County Court at Northampton, 15 March 2021.
  • Publishes regular legal updates including webinars on fixed costs, vicarious liability & COVID-19 business interruption insurance claims.
  • Advises large self-insuring institutions on the implications of COVID-19 in both civil and Coronial proceedings.
  • Advises on all aspects of COVID-19 business interruption insurance claims.
  • Works with leading motor insurance silks to research and help advise on issues pertinent to motor insurance and the MIB.
Clinical Negligence
  • Successfully defends claims on behalf of the Association of Optometrists.
  • Advises across the spectrum of clinical negligence claims.
  • Spoke alongside Sonia Macleod, of Oxford University and Researcher for the Independent Medicines and Medical Device Safety Review on Women and Medical Devices (including vaginal mesh & Primodos).

Regular contributor to the clinical negligence blog and her articles regarding the Vaccine Damage Payment Scheme have been published by Lexis PSL.

  • Successfully represented and produced written submissions (pro bono) for a family in a two-day hearing to determine the medical cause of death in a case involving traumatic brain injury, alcohol and ketamine.
  • Worked alongside world leading expert in traumatic brain injury, Professor William Stewart of Glasgow University.
  • Questioned leading experts in neuropathology, toxicology and pathology. Case reported here:
Credit Hire

Cressida has successfully run intervention arguments, defeated assertions that the Claimant was impecunious and in cases of business hire, ensured that only loss of earnings was recoverable. She is capable of handling complex and high-value credit hire claims.

Successfully acted in costs-only proceedings.

Qualifications & Awards

BPTC – Outstanding
GDL – Commendation
BA English Literature & Language (Dunelm)
Middle Temple Harmsworth Scholarship
BPP Advocacy Scholarship
FCA CISI Exams: Derivatives, Securities, UK Financial Regulations

Appointments & Memberships


  • Coronavirus (COVID-19)—FCA non-damage business interruption insurance test case (Lexis PSL: James Beeton & Cressida Mawdesley-Thomas)
  • The Vaccine Damages Payments Act 1979 and the coronavirus (COVID-19) vaccine (Lexis PSL: Elizabeth Boulden & Cressida Mawdesley-Thomas)
  • Insolvent Airlines and Tour Operators: An Alternative route to Damages [2021] TLQ 56, available here:
  • The whiplash reforms—key features and practical implications of the ‘new protocol’ (Lexis PSL: Cressida Mawdesley-Thomas)

Covea Insurance Plc v Greenaway [2021] 3 WLUK 379
Junior to Patrick Vincent QC in the first case to practically consider how the domestic court is to interpret retained EU law under section 6(3) of the EU Withdrawal Act 2018.