Manser joins after five years at Exeter-based RH Advertising where he was an account director handling clients including Confused.com and Exeter City FC.
At Space he will work on new business activity in the South West in addition to handling existing clients in the region -- the South West Regional Development Agency, South West Tourism and Visit Devon.
David Atkinson, managing partner at Space, said: "Steve's knowledge of the region and his wealth of experience in both public and private sector make him an exciting appointment and we know that his impact will be felt immediately, both with current business, and also future prospects."