Jacquelyn MacLennan is a member of the Executive Committee of White & Case LLP, and was until recently Executive Partner of the Brussels office. She has practiced EU environmental law throughout her career in Brussels, and specialises in advising companies on the EU, national and international regulatory environment (e.g. REACH, RoHS, WEEE, other chemicals and packaging regulation, Environmental Impact Assessments, Aarhus Convention, Montreal Convention, Kyoto Convention and emissions trading regulation). She also advises on EU competition law, trade law and internal market regulatory issues.
Throughout her career, Ms. MacLennan has worked closely with leading multinational corporations, and with a number of government clients. She litigates before the European and UK courts and is active in challenging administrative procedures before the European Commission.
She regularly teaches EU law and speaks at conferences on the subject of environmental law. She is an Honorary Fellow at the Europa Institute of the University of Edinburgh.
Clients "enthuse that 'it’s a pleasure to work with' Jacquelyn MacLennan, adding: 'She’s very service-oriented and reliable.'"(Chambers Europe 2012) She is admired for her "wide knowledge and very up-to-date information: the work product is top-notch."(Chambers Global 2013) Ms. MacLennan is also highly rated in the Legal 500, where she is praised as an "absolutely excellent partner" and "for her dedication to clients, outstanding communications and personal touch", with clients noting that she "has an excellent knowledge of different languages, plus excellent understanding of 'culture' within a globally operating company". Additionally, Chambers Global 2013 notes that "Clients value her 'good relationship with the authorities and excellent experience.'" "Executive Partner…Jacquelyn MacLennan is seen as 'a safe pair of hands and a very smart lawyer.'"(Chambers Europe 2012)