Prescott takes the role of group managing director, corporate and political strategy, where he’ll advise Hanover clients in different sectors.
Speaking to PRWeek, Prescott described it as "quite a roving, broad role". "In the immediate future it’s about working across the business, adding value where I can. We’ll see how things evolve in terms of client relationships and new business, and so on."
Asked if his appointment is linked to client requirements around Brexit, Prescott said: "Brexit is part of it but it goes wider. You’ve got a ‘new politics’, and I think that means corporate and other clients need help, they need a route map, they need expertise. I’m joining [Hanover] at a time when the need for this kind of counsel is bigger than ever."
Prior to joining BT, Prescott was MD, corporate communications and public affairs at Weber Shandwick. He has a background in journalism, with ten years as chief political correspondent and political editor of The Sunday Times.
Hanover CEO Charles Lewington said: "I cannot think of a communications professional with a more impressive track record of providing brilliant counsel at CEO and chairman level, both in-house and agency. Mike is a fantastic client handler and a shrewd analyst of media and political trends in our rapidly changing, post-truth environment."
Hanover said it has grown top line revenue by 25 per cent each year for the past three years. It is aiming to double revenue by 2020.
Global headcount for the London-based agency, which also operates in Dublin and Brussels, rose from 78 to 115 in 2016. Recent hires have included former Publicis Healthcare boss Anna Korving as chair of its healthcare practice, and former Hanover staffer Chris Calland from Freuds as an associate director.
Regarding future appointments, Prescott said: "There is more to come."
Last year Hanover hired Alastair Gornall, former Blue Rubicon chairman and founder of Consolidated Communications, as its first non-executive chairman. Hanover also launched an off-shoot creative comms offering called the Playbook in 2016.