The newly-established unit will bring together experts from within private, public and civil society sectors.
It will not take on any new policy roles but will work with the government on strengthening the social investment market, social impact bonds, expanding public service mutuals and supporting mission-led business.
The first meeting of the group was convened on 11 September by secretary of state for the Department of Digital, Media, Culture and Sport Karen Bradley MP.
“The UK is at a pivotal point in its history and collaboration between sectors has never been more important to address the big challenges we face in our society and economy,” Romanovitch said.
“This initiative comes at a perfect moment to mobilise a growing movement of purposeful businesses which see themselves as an integral part of society and solving societal challenges as part of their core business.”
Other members of the group include Olly Benzecry, managing director of Accenture UK & Ireland; John Pettigrew, chief executive of National Grid; Joe Garner, chief executive of Nationwide; Mark Evans, chief executive of O2; Robert Noel, chief executive of Landsec; Jacqueline de Rojas, president of techUK; Mark Norbury, chief executive of UNLtd; Peter Holbrook, chief executive of Social Enterprise UK; Sir Stuart Etherington, chief executive of NCVO; Dawn Austwick, chief executive of Big Lottery Fund, and Cliff Prior, chief executive of Big Society Capital.
In June, Romanovitch, who was the first ever female head of a top six firm, was given an 88% endorsement by Grant Thornton employees.