Regus have offices in City Gate Mahon, as do Itron, Qualcomm, FireEye, Hedgeserv, Aruba Networks and E-Bridge Training.

[1] Several technology companies, including SolarWinds, Big Fish Games and McAfee have their European or EMEA headquarters at City Gate.

[2] The national headquarters of the Health Information and Quality Authority is also located at City Gate.

[4] VHI Swiftcare also have an urgent-care clinic in City Gate Mahon.

[5] Retail space in City Gate Park, an extension to City Gate Mahon, is occupied by the furniture retailer DFS,[6] together with Starbucks Coffee and a gym franchise of Energie Fitness.