Joanna Corbett-Simmons
Partner
Contact details
Joanna is a Partner in the Litigation & Dispute Resolution team in Cardiff specialising in corporate and shareholder disputes, professional negligence, contentious intellectual property matters and special educational or additional learning needs.
Main areas of practice
Joanna has a broad range of experience in general commercial and civil claims and specialist knowledge of post-completion disputes (principally claims for breach of warranty, restrictive covenants and expert determinations of deferred consideration payments), shareholder disputes, professional negligence (principally against legal or financial advisors), contentious intellectual property matters (including trademark and design right infringement) and special educational or additional learning needs.
Clients
Joanna is regularly instructed by public, private and third sector clients. She has significant experience of advising those in the care, aviation, fashion and renewable energy industries in relation to shareholder and other corporate disputes and those specialising in security, visual arts, electronics, beauty, agricultural machinery, food and furnishings in relation to intellectual property matters. She is also a member of the firm’s Education team with a particular interest in special educational or additional learning needs and disability discrimination.
Expertise & Services
- Corporate & shareholder disputes
- Litigation & Dispute Resolution
- Intellectual property
- IP disputes
- Professional negligence
- Education
Jo has an excellent understanding of our commercial vision.
Career
Joanna read Law with French at the University of Wales Aberystwyth and l’Université Lumiere in Lyon. She then completed a Masters in European Politics before attending Law School at Cardiff University.
Joanna has been with the firm since 2006. She is a Trustee and Co-Chair of g39, an artist led contemporary art gallery and studio space in Cardiff, and Lead Governor for safeguarding at the prestigious Cathedral School Llandaff.
Joanna was promoted to Partner in May 2026.
Contact details
Accreditations

Significant Experience
- Pursuing a claim of over £2 million for unlawful termination and breach of exclusivity through international arbitration and securing third party funding to enable the client to do so.
- Representing the Interim Manager of a religious charity appointed by the Charity Commission of England and Wales in a professional negligence claim against the auditor, valued in excess of £2 million.
- Recovering £1.9 million in Deferred Consideration through a contractual expert determination procedure and advising on various Completion Account disputes, one of which led to a subsequent professional negligence claim against the client’s financial advisors.
- Advising Zip World on a number of commercial disputes, including the recovery of c.£1m through the liquidation of a supplier as a result of a Charge obtained over the principal commercial property.
- Advancing and defending injunction applications at the Court of Appeal on behalf of a National Plc in enforcing restrictive covenants following a share sale.
- Pursuing a claim through to the Court of Appeal arising out of a post-completion dispute for breach of warranty and negligent and fraudulent misrepresentation.
- Dealing with a wide variety of disputes relating to the infringement of intellectual property rights (primarily trademarks, design rights and copyright). Regularly advising on both issuing and responding to cease and desist letters and requests for undertakings in relation to obligations of confidentiality and allegations of infringement.
- Advising Local Authorities and educational establishments in relation to Special Educational Needs or Additional Learning Needs appeals and disability discrimination claims.
- Leading a team on the procedural aspects of a multi-million-pound claim for declarations from the High Court of the rent to be paid for a significant redevelopment site which settled at mediation.
- Leading on procedural aspects of a claim between two NHS bodies for fraudulent misrepresentation worth £2million.
- Commercial Secondment to Philips Electronics (UK) Limited as in-house Counsel for the Healthtech division to include representing Philips at Consortium meetings relating to the revolutionary Staffordshire Cancer Care tender worth £1.2billion.
- Frequently dealing with disputes relating to breach of confidentiality and misuse of confidential information including long running proceedings on behalf of a NHS Local Health Board against a former employee threatening to disclose confidential patient information.
- Advancing and defending injunction applications on behalf of a Welsh local health board in High Court proceedings brought by a suspended employee in relation to the disciplinary procedure being followed.
- Successfully appealing a decision of the Mental Health Tribunal for Wales to the Court of Appeal on behalf of the Welsh Government and responding to the appeal to the Supreme Court which resulted in a leading decision on the Deprivation of Liberty.
Quotes
Insights by Joanna
articles
The UKIPO has celebrated 150 years of trade marks this year. To mark the occasion, we look at the results of their survey and highlight we can help you with...
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Major fee increases will soon be introduced by the UK Intellectual Property Office (UK IPO), reflecting an average rise of 25%.
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How will SEND reform impact schools and local government in England? On 23 February 2026, the Government revealed its planned changes to the system supporting children with special educational needs and...
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