Mark Thompson has joined G3 Comms as Chairman, replacing co-founder Tony Parish who continues as Non-Executive Director and shareholder.
The appointment follows April's acquisition of a majority shareholding in G3 Comms by Apiary Capital.
Thompson brings over 25 years industry experience and has held senior roles at Reliance Communications, Energis and Intercity Mobile Communications.
Following the exit of Easynet MDNX in 2015 Thompson pursued personal interests.
Prior to his commercial career he spent 12 years as a Royal Navy Engineer specialising in electronics and communications.
Thompson said: “G3 Comms is well positioned but sustainable growth can be attained only by achieving scale in the marketplace and by augmenting core operations with the diverse range of products and services that support business communications today.
“With the support of the Apiary investment team we have the means to address these challenges with a buy and build approach directed at carefully targeted acquisitions.”
G3 Comms CEO James Arnold-Roberts added: “We plan to expand our activity into the global enterprise market, so Mark’s experience of working in this sector will be invaluable.”
Thompson's arrival follows last month’s appointment of David Blackburn as CTO and board director. It also follows the hire of former Gary Robinson, who joined from Vodafone, to manage the G3 Comms sales function.