Gisela Heyman

Datacentrix Holdings Ltd. provides secured information and communication technology solutions to the corporate and public services sectors. It designs, builds, implements, manages, and maintains computer systems, networks and information environments. The company was founded in 1994 and is headquartered in Midrand, South Africa.

Alaris Holdings Ltd. engages in the design, manufacture, and supply of antennas and telecommunication products to the cellular, wireless data, and defense markets. It operates through following segments: Alaris Antennas, COJOT, mWAVE, Linwave, and Corporate and Consolidation. The Alaris Antennas segment designs, manufactures, and sells specialized broadband antennas as well as other related radio frequency (RF) products. The COJOT segment develops broadband antennas. The mWAVE segment provides custom and commercial microwave antenna solutions. The Linwave supplies custom RF and microwave products. The Corporate and Consolidation segment is a cost centre, where costs relating to shared services and fees associated with being a listed company are included. The company was founded by Andre Petrus Cronje Fourie and Juergen Dresel in 1997 and is headquartered in Pretoria, South Africa.

G4S Secure Solutions (UK) Ltd. provides fire security and alarm services. Its services include security, care and justice, cash solutions, facilities management, health, and employment and training. The company was founded on March 14, 1972 and is headquartered in Sutton, the United Kingdom.

Alaris Antennas Pty Ltd. designs, manufactures, and sells specialized broadband antennas and other related radio frequency products. The private company, based in Gauteng, South Africa, has a history dating back to 1990 and has grown to become a substantial supplier of advanced electronic warfare (EW) antennas. Its products are used in the communication, frequency spectrum monitoring, test and measurement, electronic warfare, and other specialized markets. Alaris Antennas specializes in supplying innovative, customized antennas and related products for the defense and security markets. Gisela Therese Heyman has been the CEO of the South African company since 2019.