Call our team for a personal consultation regarding your businesses fire and security needs on 01733 246 990
Nationwide Coverage
5-Star Burglar Alarm Installation Company
Commercial Intruder Alarm Installation
An alarm nobody responds to is just noise, and an alarm at the wrong grade can fall short of your insurance conditions. Britannia installs intruder alarms graded to your risk and your insurer’s requirements, with monitoring designed in where you need it.
Intruder alarm installers who design for the response
Whoever signs off an intruder alarm usually answers to an insurer, a board or a council. They need a system that meets the policy, doesn’t cry wolf and gets a response.
- The right grade. Most commercial properties fall within Grades 2 to 3, and we generally recommend a Grade 3 wired system: built to resist intruders who know how alarms work.
- Designed against false alarms. Every component installed correctly to minimise false activations.
- Wired or wireless. We recommend wired for most commercial premises. Wireless is often more practical for retrofits where running cable is difficult.
- Integrated where it helps. A triggered alarm can prompt CCTV to focus on the area, working alongside access control and monitoring.
- Handed over properly. The system is fully tested, and your team is shown how to operate it confidently.
Intruder alarm standards, police response and insurance
Commercial intruder alarms are designed to BS EN 50131-1, which sets four security grades, applied in the UK through PD 6662:2017. Grade 2 suits low-to-medium risk, Grade 3 medium-to-high, and Grade 4 high-risk sites facing well-planned attacks.
In England, Wales and Northern Ireland, police response is governed by the NPCC Security Systems Policy (2026). To qualify, a system needs:
- installation, maintenance and monitoring by a company certified by a UKAS-accredited body (in practice NSI or SSAIB) and on the police force’s compliant list
- design to PD 6662:2017, with alarm confirmation to BS 8243
- monitoring by an alarm receiving centre certified to BS EN 50518 (or the older BS 5979)
- a URN (£70.68 inc VAT from 1 April 2026) and at least two keyholders who can attend within 20 minutes. A keysafe isn’t an acceptable alternative
Grade 1 systems, and any system that isn’t remotely monitored, can’t get police response through a URN. Police Scotland applies its own rules.
The analogue phone network switches off on 31 January 2027, so new systems should signal over IP or mobile, ideally dual-path. Many insurers require a maintained intruder alarm, and some specify who installs and maintains it, so check your policy wording before you specify.
Accreditations
- SSAIB certificated for intruder alarm systems
- NICEIC approved contractor
- ISO 9001, 14001 and 45001, UKAS-accredited certification
- CHAS and Constructionline
- BAFE SP203 registered (300175) and FIA member, for fire and security from one provider
Case study: Yaxley Fire Station
A £1 million redevelopment of a historic on-call fire station in Yaxley, Peterborough, adding a lecture room, office, welfare facilities, an appliance bay and a smoke house training facility.
Britannia installed a site-wide intruder alarm on a Honeywell control panel, with motion detectors, door contacts and sounders, alongside a Category L1 Gent fire alarm protecting the new office areas and appliance bay. Both systems came from one contractor, with a one-year warranty.
We deliver Grade 3 at scale too: the Honeywell Galaxy system we installed at Houghton Regis Leisure Centre has more than 80 devices.
Free intruder alarm survey and quote
Send us your insurer’s requirements if you have them. An engineer surveys your premises, entry points and security risks, and recommends the grade the site needs. You get a free site survey and a no-obligation quote.
Call 01733 246 990 or email info@britanniaalarms.co.uk.
Our intruder alarm installation process
- Site survey. Premises, entry points and security risks assessed.
- System design. Alarm type, sensors and monitoring options chosen for your business.
- Installation. Our qualified engineers install and configure the alarm with minimal disruption.
- Testing and training. The system fully tested, and your team shown how to operate it confidently.
- Ongoing maintenance. Service contracts and 24/7 support keep it reliable and compliant.
Intruder alarm installation across the UK
We install intruder alarms across the UK from our base in Peterborough, with engineers covering Cambridge, Northampton, Leicester, Nottingham, Lincoln and Luton.
- Industrial and warehouse sites
- Retail
- Offices and commercial buildings
- Schools, local authority and public buildings
- Healthcare and leisure
Our intruder alarm installations range from simple audible-only systems to complex integrated packages linked with CCTV and access control, including large remote signalling installations covering multiple sites.
"Britannia Fire & Security are a very approachable and knowledgeable company, proactive in giving quotations within timescales given, very professional on site and backed up with great office support."
"We really enjoy working with Britannia, we find them to be extremely helpful throughout the process from tendering, design, installation and right through to completion. They have been extremely supportive and most importantly in a professional and timely manner."
"Britannia have a vast and incredibly competent knowledge base, that has helped with many challenging issues with complex systems. Planned installation work has always been completed to a high standard and high level of professionalism, with the added reassurance of supportive after sales care."
"Having utilised Britannia for many years as part of our MEP supply chain, would highly recommend their services. Professional and knowledgeable team members complimented by an experienced and skilful engineering team they have assisted us in delivering some high quality projects."
"Concept-MEP carry out a large number of projects in conjunction with Britannia Fire & Security both in the UK & overseas. This has been a long-standing relationship due to the high quality of service and workmanship that they provide"
"More than happy to assist"
"I have used Britannia Fire & Security over the past 15 years at various company’s I have worked for. They offer a very professional service in all aspects of Fire and Security, and everyone in the business is aways willing to assist. I wouldn’t have an issue in recommending Britannia."
The Britannia Promise
Unrivalled Customer Service
Our service and maintenance capabilities and technical back up are second to none, ensuring that our customers have peace of mind using the best quality security system on the market.
Complete Security Solutions
From complex integrated intruder alarm packages to simple fire alarm detection systems, we can tailor any solution to suit your requirements. We provide the best class systems for your business.
Experienced Engineers
With more than 30 experienced engineers at Britannia Fire & Security we are able to provide nationwide coverage for clients in all areas of fire alarms, CCTV and security systems.
Intruder Alarm System Installation Frequently Asked Questions
1. What is commercial intruder alarm installation? >
Commercial intruder alarm installation is the professional fitting of a security system in business premises. It involves placing sensors, control panels, and alarms to detect unauthorised entry, protect assets, and provide peace of mind through early warning and deterrence.
2. Where are commercial intruder alarms typically needed? >
Intruder alarms are essential for offices, retail stores, warehouses, schools, and industrial facilities. Any premises containing valuable assets, sensitive data, or staff working outside normal hours benefits from a reliable system to prevent break-ins and protect operations.
3. Why are commercial intruder alarms important? >
They deter criminal activity, reduce the risk of theft, and minimise potential damage to property. Alarms also ensure faster response from security teams or police, helping businesses stay secure, compliant with insurance requirements, and resilient against disruption.
4. Who is responsible for installing an intruder alarm system? >
The business owner, landlord, or responsible person must ensure security measures are in place. Professional installation by accredited engineers is recommended to meet standards, reduce false alarms, and maximise protection for employees, property, and assets.
5. How do intruder alarms improve overall business security? >
Intruder alarms form part of a wider security strategy, working alongside CCTV, access control, and monitoring. They provide visible deterrence, immediate alerts, and reassurance that the premises are safeguarded around the clock, even when unoccupied.
Industry News & Insight
Festive Period Arrangements 2025
Our office will close at Midday on Wednesday 24th December 2025 and will reopen at 9am on Monday 5th January 2026. During the festive shutdown peri...
Planet Mark Business Certification Tier 2
🌍We're pleased to announce that we've now been recording our data for two years.
Festive Period Arrangements 2024
Our office will close at 12:00 on Tuesday the 24th of December 2024 and will reopen at 09:00 on Thursday the 2nd of January 2025. During the festive s...