Gaffney joins from Williams and Glyn, a bank for UK personal and business customers set up by RBS, where he headed up external comms. Before this he worked in-house at RBS as media relations manager for the group’s corporate banking division. Gaffney is also a director of outdoor event company Total Warrior.
In addition, Laura Leslie, who is part of the comms team at TSB, is joining the company on secondment.
Charlotte Street Partners has offices in London and Edinburgh and helps businesses and individuals create strategies for engaging with customers, staff, media, investors and financial markets, employees, politicians and regulators.
Malcolm Robertson, managing partner Charlotte Street Partners, said: "We've had a good first year and are pleased to be strengthening the team as we prepare to grow.
"David has a wealth of frontline communications expertise from which our clients will benefit greatly, and has a good blend of agency and client experience. Laura has worked in the communications team at Lloyds and TSB, and played an important role in the launch of TSB and the subsequent successful IPO, which is invaluable experience as we think about opportunities in the UK financial communications sector."