Curran was a director at Freuds for ten years before joining Good Relations, where she helped manage comms for the Invictus Games.
Curran will work with Seven Dials CEO Simon Kelner on growing the agency in its next phase of development.
Curran said: "Simon is a former client from my time at Freuds, and we have always stayed in touch, looking for the right opportunity to work together again. The challenge of taking Seven Dials forward in its second year of business as one of UK’s fastest growing PR agencies is exciting. It feels full of opportunity."
Kelner added: "Claire’s big brand experience she gained as a director at Freuds is exactly what we need in our next step forward. I know we’re going to make a great team, and I’m confident about 2015."
Chairman Andrew McGuinness remains chairman of Seven Dials despite taking up the CEO role at Freuds around the same time that Freuds owner Matthew Freud acquired a significant stake in Seven Dials.
In addition Seven Dials has hired Damian Field as senior account manager in its lifestyle team working on the Fortnum & Mason account and other luxury clients Debrett’s and Harrys of London.
Field has spent five years at Guinness World Records, where he was responsible for managing consumer and trade campaigns.