On the international level, Allmendinger was a member of the High Level Economic Expert Group "Innovation for Growth" (I4G) of the European Commission (2012–2014). When the United Kingdom assumed the presidency of the G7 in 2021, she was appointed by the United Kingdom's Minister for Women and Equalities Liz Truss to a newly formed Gender Equality Advisory Council (GEAC) chaired by Sarah Sands.