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Crosby Intruder Alarms: A 40-Year Journey of Innovation and Trust


In the heart of Merseyside, a story of resilience, innovation, and commitment began in the early 1980s. Crosby Intruder Alarms, established on 2nd January 1984, has transformed from a humble start-up into a leading name in the UK’s security alarm industry. This blog post is the first of a series covering the early years of the inspiring journey of Crosby Intruder Alarms, celebrating 40 years of excellence and trust.

The Birth of an Idea

The inception of Crosby Intruder Alarms is a tale of opportunity born from uncertainty. When Roy Williams & a colleague, two skilled television engineers, learned about the impending closure of their workplace, they faced a crossroads. The television industry was evolving rapidly, with products becoming more reliable and rental companies feeling the pinch. It was a time for change, a time for a new direction.

Their colleague’s transition to a security control panel manufacturer planted the seed for what would become Crosby Intruder Alarms. Recognising the potential in the security alarm sector, Roy decided to establish their own company, a decision that would mark the beginning of an incredible journey.

Commitment to Quality

Through meticulous market research, Roy identified two distinct segments in the security alarm industry: the budget, non-British Standard compliant systems, and the high-quality, custom-designed systems. Their commitment to excellence was unwavering, leading them to focus on the latter. They vowed to provide only top-notch systems that met the rigorous standards of BS4737, ensuring maximum protection and quality.

Growing Steadily

The early years were a balancing act for Roy. While maintaining his day job in the television industry, he devoted his evenings and weekends to building Crosby Intruder Alarms. His dedication paid off, as he slowly but steadily amassed a loyal customer base. Their focus on quality installations earned them not only repeat business but also the trust and recommendations of their clients.

Expanding Horizons

From its humble beginnings, Crosby Intruder Alarms has grown beyond Merseyside, spreading its services across the UK. The company stands today as a testament to quality and reliability, offering comprehensive installation and backup services nationwide. By only utilising the finest products and maintaining the highest installation standards, Crosby Intruder Alarms has become a trusted name in home and business security.

Celebrating 40 Years of Excellence

As we celebrate 40 years since its inception, Crosby Intruder Alarms continues to evolve, embracing new technologies and trends in the security industry. The company’s journey is a remarkable example of how vision, quality, and customer trust can build a lasting legacy. It’s not just about securing premises; it’s about building a safer community, one alarm at a time.

Crosby Intruder Alarms’ 40-year history is more than just a timeline of business growth; it’s a narrative of adapting to change, prioritising customer safety, and unwavering commitment to quality. As we look back on these four decades, we also look forward to the future, where Crosby Intruder Alarms will continue to innovate and protect under the ownership of Roy’s wife Ann and son Gareth, staying true to the vision set forth by Roy  on that pivotal day in January 1984.

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