Phone: 08002461493.... Address: 15 Darwin Rd, Stevenage SG2 0DE.... Website: https://www.primisinstalls.com/.... We are a Hertfordshire- based company working out of Stevenage, Harpenden. We offer aerial and satellite installation and repair, CCTV and security system installation, networking, smart home solutions and centralised audio and video distribution - and much more!