Siân (she/they) is a solicitor who works in the Public Law Team based in the Cardiff office. Siân works under the supervision of Christopher McFarland (Director and Head of Education Cardiff). She is also in the process of completing her PhD at the University of Exeter.

Siân joined Sinclairslaw in 2025. She qualified as a solicitor in 2013.

Siân specialises in working with children and young people, and has a background in trauma informed practice.  She is passionate about children’s rights, with a particular interest in Welsh social care law. Siân also holds the Law Society’s Senior Supervising Caseworker accreditation in Immigration and Asylum Law. As a researcher Siân writes on a number of legal issues and was part of the team that drafted the Welsh Government Guides for Social Workers working with Unaccompanied Asylum Seeking Children in Wales (https://www.gov.wales/guidance-children-seeking-asylum-wales).

Siân is happy to be instructed to assist with the following matters:

• Social Care Judicial Review (Children and Adults)
• Age Assessment
• Asylum and Immigration (Judicial Review Only)

Publications

Marshall, E., Pearce, S., Engle, S., & Schneider-Strawczynski, S. (2025). Assessing the impact of immigration legal aid cuts under LASPO: the quest for better data. Journal of Social Welfare and Family Law, 47(2–3), 134–161. https://doi.org/10.1080/09649069.2025.2530880

Immigration legal aid and value for money: Identifying the missing data, Public Law Project, Siân Pearce, Emma Marshall, Samuel Engle, https://publiclawproject.org.uk/content/uploads/2024/07/2024HASS018-Briefing-paper-AW.pdf

Briefing Notes: Children’s Asylum Claims and the IMA – where are we now? https://childrenslegalcentre.wales/briefing-note-childrens-asylum-claims-and-the-ima-where-are-we-now/

Blog: Welsh Universal Income Pilot overlooks Legal Aid for Asylum Seekers https://freemovement.org.uk/welsh-universal-basic-income-pilot-overlooks-legal-aid-for-asylum-seekers/

Blog: Social Care Rights for Vulnerable Children in Wales https://freemovement.org.uk/social-care-rights-for-vulnerable-children-in-wales/