Catrin's research encompasses three key themes. Firstly, Catrin researches Welsh dimension to the law. Accordingly, in 2005, she completed her doctoral thesis on the use of the Welsh language in the legal system and has since published work on the impact of language legislation on linguistic behaviour.

Secondly, Catrin undertakes research in to bilingualism in the law, and is therefore interested in the linguistic differences between legal texts produced monolingually and bilingually. Linked to this is Catrin's interest in the production of legal texts in dominant and minority languages.

Thirdly, as someone with an interest in theatre, both as a performer and a writer, Catrin is also interested in the engagement between theatre and the law, and has therefore published work on the law in Shakespeare, and is currently working on an article on the theatrical process as a method for exploring the impact of legislation.

She now combines these interests by being part of a British Academy funded project into simultaneous interpretation in the legal system. She has also been awarded an AHRC networking grant to undertake a comparative study of court interpretation in Wales and the Republic of Ireland, working with Dr Roisin Costello of Trinity College Dublin and Dr Rhianedd Jewell and Dr Hanna Binks of Aberystwyth University.

CT34920 Ecwiti a Chyfraith Ymddiriedolaethau

CT34820 Cyfraith Tir 

CT39020 Traethawd Estynedig y Gyfraith a Throseddeg

LC34920 Equity and the Law of Trusts

LC34820 Land Law 

CT11120 Cyfraith Camwedd

LC31820 Property Law and Practice

CT30220 Trosedd yn y Gymru Gyfoes