FHF, which was formed out of Fishburn and the UK business of fellow Omnicom agency FleishmanHillard, told PRWeek that the wins were among several new clients it had gained since its formation, but that these were the first it could announce.
The London-headquartered Global Innovation Fund invests in social innovations across the world, with funding ranging from several thousand to several millions of pounds, and is supported by various governments.
FHF's team on the ongoing GIF account began work last month led by Steph Bailey in London, and will work with FleishmanHillard's South Africa team on a London launch event and to "help the fund develop a narrative and tell its story to an international audience with cut-through media coverage, as it looks to attract the next wave of high-quality social innovators".
Gardena, part of Swedish global firm Husqvarna Group, appointed FHF last month as its retained UK agency. As with GIF, it was won following a three-way pitch.
FHF will "embark on an integrated communications programme, incorporating a mix of on- and offline media exposure", the firm said, as it aims to reach both rural and urban gardeners. It will work with FleishmanHillard's German team, which also works with Gardena.
Jim Donaldson, chief executive of FHF, said: "We’re definitely in a new era. We’re not just a top ten agency, we’re a better agency with more expertise, better solutions, fresh perspectives and amazing ideas. Clients and prospective clients have felt this and they want to do business with us."
A press release from the agency said the firm was a "re-energised agency that combines the global network of FleishmanHillard with the local strength and heritage of Fishburn".