There are so many companies that manufacture burglar alarms. The most recommended and approved by the UK government are ADT systems, AGS systems and British gas home security.
ADT systems
They are the leading provider of electronic fire and security services in the whole United Kingdom. They specialize in home security, and commercial security including, electronic article surveillance (EAS), fire detection, alarm systems, gaseous extinguishing and asset tracking solutions to a wide range of people and organizations. They protect 89 out of the UK’s top 100 companies and more than 120,000 homes.
ASG systems
They have been manufacturing home securities for the past 40 years. Their company has its base in Washington. An example of their astonishing product is the digital video recording and management system. This system can be discreet or fully integrated with: