Ruth O’Sullivan

Commercial Disputes

Ruth is a Solicitor in our Commercial Disputes team.

Ruth joined Capital from the Government Legal Department, where she was advising the Department for Transport on its Rail Transformation Programme.

She was also a legal adviser for central government in a number of other departments including, the Department of Health and Social Care, the Department for Education and the Department for Levelling Up, Housing and Communities.  She also has experience of public law litigation – Judicial Review, Freedom of Information appeals and contempt of Court – and private law litigation.

Before becoming a lawyer, Ruth worked in policy and public affairs for charitable organisations. Through this work, she became familiar with the legal frameworks governing special education and supported housing.

  • Advising the Gambling Commission in relation to the 4th National Lottery Licence.
  • Advising the Gambling Commission on Regulatory Settlement funds and the approved Research, Education and Treatment list.
  • Advising Bridgend schools on issues such as Individual Health Plans, rules around parent governors and school policies.
  • Advising the British Medical Association in litigation in the Court of Appeal.


Ruth joins us from the Department of Transport where her work encompassed:

  • Advising the Department for Transport on passenger focussed elements of rail transformation including accessibility and Transport Focus.
  • Advising on amendments to the Levelling Up and Regeneration Bill.
  • Advising the Department of Levelling Up, Housing and Communities on the ‘How to Rent’ tenant guide.
  • Drafting coronavirus regulations on commercial tenancies.
  • Advising on Ofsted inspections during Covid-19.
  • Public law and regulatory
  • Education
  • GDPR
  • Equalities


  • Solicitor, Capital Law Limited (Mar 2023 – present)
  • Solicitor, Government Legal Department (Sep 2021 – Mar 2023)
  • Legal Trainee, Government Legal Department (Sep 2019 – Sep 2021)
  • Executive Officer, Government Legal Department (Sep 2018 – Aug 2019)
  • Public Affairs and Campaigns Officer, Centrepoint (Sep 2014 – Aug 2018)


  • The University of Law: LPC (2018 – 2019)
  • The University of Law: GDL (2016 – 2018)
  • The University of Sheffield: BA, Hispanic Studies (2008 – 2012)

Memberships / Trustee positions 

  • The Law Society of England and Wales
  • Governor, Riverside School


  • Spanish (Limited working proficiency)