The original bright spark…

SIA founder Robert ‘Bob’ Stewart is regarded as a Stalwart of the fire and security industry, having created his first intercom system to connect to a friend four terraced houses away – aged just eight.

What was to become Stewart Intruder Alarms (SIA) was formed in 1969 and first based at Bob’s home just off Finaghy Road South in Belfast, but then moving to premises on Dublin Road. It was the first locally owned alarm company in Northern Ireland and quickly became one of the leading service providers in the area.
SIA became the only electronic security contractor for the Belfast Education & Library Board for over 45 years, and looked after the personal and bookmaking empire of Barney Eastwood for 30+ years. Prestigious clients via its Security Branch contract during the 70s also included The Duke & Duchess of Westminster, Lord Brookborough and the Earl of Roden.
Bob is heralded as something of a pioneer by many of his contemporaries and peers and his entrepreneurial spirit also played a large part in the formation of the fledgling Northern Ireland Security Industry Association – which was a precursor to the National Security Inspectorate (NSI) that to this day is the leading UK certification body for the security and fire sector.