His role will involve heading the comms team, reporting to MD Caireen Wackett, and working alongside the heads of strategy, creative and business. Dilleyston will work across a portfolio of clients including Westfield, Mercedes Benz and Clarks.
At Hope&Glory, he handled a number of high profile accounts including Barclays Retail, O2 and Airbnb. Dilleyston previously worked at Mischief PR.
His predecessor in the role was Holly Bocock, who last November became head of marketing at lingerie retailer Rigby & Peller.