Wecome to the Carter Voce Security Limited web site. As London's leading intercom company we specialise in every aspect of security for the home, ranging form door locks to the very latest Access Control and Audio/Video door entry systems and Intercoms. We have been supplying, installing and repairing access control and security systems in London and the South-East for over 30 years. We can provide bespoke systems to suit a specific requirement and systems specially adapted for disabled or elderly users.