Nic Cooper, founder and non-executive chairman of Sledge, has left the company following a management buy-out.
Cooper, who led the agency from its formation in 1991, said: "I have had an incredible journey with Sledge and our wonderful clients who have entrusted us with their live communications over the years.
"I’m very proud of the work we have produced, much of it award-winning."
Cooper is currently chairman of Eventstag, the experiential tech company, and will be working on a number of exciting new ventures within the industry.
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