He will be replaced by current corporate practice head Kate Triggs. She is a 15-year B-M veteran, whose other responsibilities include acting as client leader on its global Johnson & Johnson account.
She takes over B-M’s largest practice in London, which will also involve managing the agency’s biggest account in the UK – that of pharma giant AstraZeneca.
The healthcare practice is understood to account for around 35 per cent of the agency’s UK income and includes other major pharma clients, such as GlaxoSmithKline.
B-M MD Gavin Grant will take over Triggs’s corporate practice post while continuing to head the PA division.
National PR, which is 25 per cent owned by B-M, is to launch its London operations with Sutton at the helm in October.
B-M UK chief executive Allan Biggar said: ‘B-M owns 25 per cent of National PR and works with some of their clients, particularly in Canada. We’ll be working with them here and building opportunities for trans-Atlantic co-operation on a few clients.’