On her return to the United Kingdom, Legido-Quigley started a doctoral degree at the London School of Hygiene & Tropical Medicine under the supervision of Martin McKee.
[1] At the LSHTM she worked with Peter Piot, then Director of the London School of Hygiene & Tropical Medicine, to understand the policy impacts of public health research.
[3] In addition to her academic work, Legido-Quigley is a member of the Council of the World Economic Forum[4] and the Commission for Universal Health convened by Chatham House since 2022.
[1] Legido-Quigley worked to analyse the public health responses of different countries, looking to establish best practise and better inform future strategies.
[10] Writing in The Lancet, Legido-Quigley analysed the building blocks of effective healthcare systems; and said that they included governance, financing, delivery, health workers and information.
[12] She called for more clear guidance from the European Union on how to count the number of people who die of coronavirus disease, as not all nations were using the same methodology, making comparisons of the public health response difficult.