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Nina De Ayala Parker


Nina works in the international and group litigation departmen

Environmental law Group claims International human rights

Legal expertise

At Leigh Day, Nina works in Martyn Day and Oliver Holland’s team, assisting predominantly on claimant-led national and international group claims against multinational corporations alleged to have committed environmental and/or humanitarian harms, such as environmental nuisance and forced labour. Nina has also assisted on the vehicle emissions claims.

Further experience

Nina is an elected Labour Councillor. Before joining the firm Nina worked for an international organisation on the emerging policy area of climate security. Nina has also worked for civil society campaigns and with cross-party Parliamentarians from 2016 till 2020: highlighting the constitutional and administrative ramifications of Brexit, particularly its impact on vulnerable groups.


The University of Law - LLM and LPC
Luis Guido Carli Universidad – International law (year abroad)
University of East Anglia – LLB with European Legal Systems


Nina is an active member of the Green Committee at Leigh Day.

News and blogs

Blog Post
Environment Image
Environment Human rights Climate change

Held v Montana: historic win for climate justice and the right to a healthy environment

In their latest blog, Nina De Alaya Parker and Pia Mitchell say a ruling by the Montana court demonstrates the promise of a constitutional right to a healthy environment in seeking alternative pathways to climate justice.