LONDON—Group managing director David Wilson is leaving Bell Pottinger after 15 years with the UK PR firm.

Announcing his departure via email, Wilson noted that he plans to "take a break" before deciding on his next destination.

Wilson joined Bell Pottinger in 2000 from Pfizer, serving as chairman of the UK firm and leading its business and brand practice since 2006. When Bell Pottinger completed its MBO from Chime in late 2012, Wilson became a shareholder, which he retains despite his exit.

"I’ve enjoyed a tremendous time here at Bell Pottinger and as I continue to be a shareholder, I look forward to seeing the company go from strength to strength," said Wilson in his email.

"David has played a pivotal role in the growth and development of many areas of Bell Pottinger and we are very sad to see him go, but he will always be a friend of our business," added group CEO James Henderson.