123's security systems protect you, your loved ones and also your property. 123 will give you the peace of mind in knowing that your family and home are in safe hands and protected 24/7. Monitored systems are never ignored.123 Alarm systems are linked up to a monitoring station designed to flag up any alarms that may have gone off. The experts at G4S are always there to ensure your safety. £99 home security system and installation usually worth £999. Our team of locally based engineers are always there to ensure that your system is working to a high standard. We also carry regular checks at your convenience to ensure that you are satisfied with the service we are providing.