Spires has been with the group for nine years and has been working as acting managing director since August, when Simon Barbato moved to Group360's new specialist branding agency BBI360.
The group has undergone a restructure since last year, which has also seen the launch of specialist design agency Pulse360.
Tim Petherbridge, CEO of Group360, said: "The reorganisation of Group360, with new company launches such as BBI360 and Pulse360 and appointments such as Sunara's, allows us to deliver a seamless integrated service to the market."
Communique360 is anticipating a £7m turnover this year. Clients include Atoc, Mazda, Monarch, Luton Airport, the Society of London Theatres and the M6 Toll Road.
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