He has been AstraZeneca’s head of government relations and external affairs since 2008.
The move marks a return to agency life for Digger, who previously held senior roles at Burson-Marsteller and DLA Piper.
Digger said: ‘I am looking forward to making a return to the vibrancy of agency life. One of the things you learn quickly in-house is what does and doesn’t work in terms of an agency offer.
‘Good Relations is a great name in the industry and there’s a phenomenal opportunity to build on the existing client base given the strength of the team and the background of change in the public affairs market.’
Digger will report to chairman Kevin Murray, who said: ‘We intend to grow our political communications practice quickly and Pete has a record of commercial success in his previous agency experience. Combined with the insight he has gained in-house, we believe it is a powerful offer to the market.’
Digger started his career in 1995 as a researcher to Douglas French, then the Conservative MP for Gloucester.