The agency said in April that it would seeking a new creative lead following the departure of its global head of brands Daniel Cohen, who joined Lewis in June.
According to a statement from Grayling, the appointment forms part of the company’s "ongoing evolution as a business", and demonstrates "an investment in further honing the company's creative capabilities". The agency appears to be on the up after a difficult period.
Sarah Scholefield, Grayling UK CEO, added: "Andrew's hire represents our ambition to accelerate our creative culture at Grayling. Beyond this, we've hired Andrew because we want to interrogate perceived ideas within the agency and become more challenging in the process."
Ferguson, who started in June, has been tasked with spearheading creativity for Grayling’s work with Marks & Spencer, an account the agency won in March. He first worked with the retailer during a five-year stint at PR agency Unity between 2010 and 2015.
His remit also includes responsibility for creative activity and staff across Grayling's eight UK offices, and at its consumer PR division Atomic.
Prior to joining Grayling, Ferguson was UK director strategic and creative planning at Ketchum. He also spent 12 months as PR director at Amplify between 2009 and 2010, working with clients including 3Mobile and Tiger Beer.
Ferguson left Ketchum in May. The agency said it was in the process of hiring a replacement.