Lesley specialises in public and commercial law with an emphasis on human rights, EU and equalities law. She has a particular interest in and recent experience of successfully litigating the public sector equality duty in section 149 of the Equality Act 2010.
Her substantial judicial review practice (acting alone and with senior) includes acting for both petitioners and respondents, including local authorities. She is currently instructed as junior counsel to the Scottish Government in the challenge to the Alcohol (Minimum Pricing) (Scotland) Act 2012, which was recently the subject of a preliminary reference to the CJEU. Lesley was junior counsel for the petitioners in Morrison & Others v Alistair Carmichael MP & Another  ECIH 51, the first election petition to be brought in Scotland since 1964. She was instructed as junior counsel for the petitioner in the first challenge to a planning decision of one of the Local Review Bodies established following the changes brought about by the Planning etc. (Scotland) Act 2006. In 2014, she was instructed as junior counsel for the local authority in the FAI at Paisley into the death of Declan Hainey.
Lesley has advised on state aid and other EU as well as general civil matters, including commercial cases, and appears regularly in the Court of Session, including the Inner House and in the commercial court. She also regularly appears in the Upper Tribunal and First-tier Tribunal (Immigration and Asylum Chamber). She was the Lord Reid Scholar for 2011/12.
- Hunter v Student Awards Agency for Scotland  CSOH 71
- Morrison & Others v Carmichael  ECIH 71
- Romein v Secretary of State for the Home Department  CSIH 24
- "A" v Secretary of State for the Home Department  CSIH 38
- William Tracey Limited v Scottish Ministers & Others  CSOH 131
- Ansari v Aberdeen City Council & Others 2015 CSOH 168