Covid-19 Notice :- At Controlled Limited we are committed to the safety and security of our customers and staff. We remain compliant with Government preventative guidelines and remain contactable on our usual number 0207 863 7828.

The current climate highlights the importance of secure remote access and monitoring of systems. Please contact us to discuss our bespoke solution.

The Hospital of St John & St Elizabeth


Founded in 1856 under the care of the Sisters of Mercy, an order of nuns who worked with Florence Nightingale in the Crimean War, The Hospital of St John & St Elizabeth pioneered the use of advanced nursing techniques to help the sick, the dying and the needy in the local community. 160 years later, the nuns have gone, but their ethos remains at the heart of what is regarded as a unique London hospital.

Controlled Ltd continue to provide on-going Preventative and corrective Maintenance support across the Hospital estate to the Security Systems which are critical element in the day to day operational requirements of the hospital.