We are a trusted fire and security company installing fire alarms, CCTV, access control, intercoms, and intruder alarms for homes, businesses, and industrial sites across Portsmouth and Hampshire.
Proven Expertise in Fire and Security
We have an experienced team of system designers, installers and maintainers who have completed many projects over the years from the domestic house to large commercial properties and industrial units. We have carried out many project rollout works for our larger clients. Our engineers install to the highest standards, ensuring your installation fully complies with the latest SSAIB and European standards.
We are certificated in the following:
- CSCS (site safety certification)
- PASMA (mobile elevated tower certification)
- IPAF (scissor lifts and cherry pickers)
We have built our engineering team over the last 30 years, employing highly skilled engineers, as well as training engineers in-house.
Part of the process involved becoming BAFE approved fire installers involved ensuring all our quality and training procedures are fully up to date.

Key Systems Fire & Security Installation and Service
Access Control
CCTV
Intruder Alarms
Fire Alarms
Delivering Excellence Every Time

We Can Work on Any Property
With a wealth of experience in the fire and security industry, we pride ourselves on delivering high-quality installations that meet the latest standards and consistently exceed client expectations. Our team of skilled engineers has worked on a diverse range of projects, from small commercial units to large-scale, high-security environments. We understand the unique demands of each setting and tailor our approach accordingly—ensuring safety, reliability, and long-term performance.
Compliant Security Systems You Can Trust
At Key Systems UK Limited, we are happy to assist with both business and personal security needs. We work with industry-leading equipment, and our engineers install to the highest standards, ensuring every installation complies fully with the latest SSAIB and European regulations.
Start Securing Your Property Today
We are a local, independent firm offering free security surveys for new or upgraded intruder alarm and CCTV systems.

Serving Hampshire and Beyond
We proudly serve clients throughout South East England. Our team delivers reliable fire and security solutions in key locations including Southampton, Portsmouth, Winchester, Basingstoke, and Andover. Services also extend to neighbouring areas such as Bournemouth, Reading, Guildford, and along the wider South Coast.