Since 1989, Integrated Security Manufacturing Limited (ISM) has been at the heart of the electronic security industry, building a reputation for consistency, reliability, and a people-first approach grounded in technical expertise and real-world experience. In an industry where systems must perform flawlessly and support must be immediate, service and support are not just priorities—they are fundamental to everything we do. Our long-standing relationships with installers, integrators, consultants, and end users reflect a deep understanding of how security systems operate in practice, not just on paper.
Critical infrastructure for over 30 years
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ISM are global leaders
ISM delivers unified, cyber-assured security solutions across a wide international network, supporting high-risk estates in multiple regions and regulatory environments.
01
Where Service, Support, and Connectivity Meet
Electronic security demands confidence not just in the technology, but in the people behind it. ISM's dedicated Technical Support team delivers 24/7, year-round assistance from engineers who understand the realities of live security environments, providing fast, knowledgeable help when it matters most. Beyond resolving issues, we work closely with customers and partners to support system design, deployment, and ongoing optimisation, ensuring long-term success. This is strengthened by our in-house development team, whose close collaboration with support staff ensures real-world feedback continuously drives product improvement and innovation.
02
Manufacturing Excellence with Industry Insight
ISM's in-house design and manufacturing capability is central to delivering our market-leading Cell Call solutions, giving us full control over development and production to ensure reliability, resilience, compatibility, and long-term support. This end-to-end approach enables us to respond quickly to industry changes, emerging technologies, and customer needs, while maintaining the consistent quality our partners depend on.
03
A Culture Built on Knowledge and Collaboration
We believe the strength of our service comes from our people. ISM promotes a collaborative, supportive culture where knowledge is shared, experience is valued, and communication is open. Continuous training and close alignment across teams ensure our customers benefit from informed advice, consistent service, and a genuinely collaborative approach.
04
Looking Ahead
With decades of experience, strong industry connections, and a forward-looking mindset, ISM continues to support the evolving needs of the electronic security sector. By combining technical expertise, practical understanding, and a steadfast commitment to service and support, we help our customers operate with confidence - today and into the future.
Leadership Grounded in Industry Experience
The ISM leadership team brings decades of hands-on experience across electronic security, communications, manufacturing, and system support. This depth of knowledge enables us to anticipate challenges, respond quickly, and design solutions that work seamlessly within complex security environments.
Stephen Smith
Managing Director
Stephen has guided ISM’s long-term direction with a clear understanding of the evolving electronic security landscape. His strategic leadership is rooted in practical industry insight, ensuring ISM continues to adapt to new technologies while remaining dependable, approachable, and customer focused.
Mark Ranger
Technical Director
With extensive technical experience, Mark plays a pivotal role in keeping ISM at the forefront of security innovation. His understanding of system integration, reliability requirements, and fieldbased challenges ensures ISM solutions are not only technically robust, but also straightforward to deploy, maintain, and support.
Andy Smith
Commercial Director
Andy brings strong commercial awareness combined with an appreciation of the nuances specific to the security sector. His role supports sustainable business growth while maintaining close alignment between customer needs, technical capability, and long-term partnerships.
Phil Tennent
Business Development
In March 2025, Phil Tennent joined ISM to head up business development, focusing on strengthening industry relationships and expanding market presence. His role bridges marketing, sales, and customer engagement — ensuring ISM remains connected, visible, and responsive within a fast moving andrelationship driven industry.