Caroline Weber, formerly executive director, business partnerships at Sport England, will join F-H as a director and partner in September.
At Sport England, she led the organisation's comms, public affairs and commercial work in the run-up to the 2012 Olympics and Paralympics. She was previously senior director, comms and government relations at McDonald's Europe.
F-H London MD Richard Kanareck, who joined the agency from eBay in January, said Weber was 'smart, articulate and connected'.
He added: 'She has an impeccable track record leading high-profile brand reputation campaigns, and will help strengthen and grow our corporate comms capabilities in London and internationally.'
Weber commented: 'The opportunity to work with both existing and new clients on the development of their brand reputation and offer has made this a fantastic next step for me, and will put to great use the brand and commercial skills I have developed in both my time at Sport England and McDonald's.'