6 Best Alarm & Security Installers in Cambridge for 2026
🚨 6 businesses·📍 Cambridge
✓ Reviewed regularly·✓ Updated 19 August 2026
Written by Mark Reid,
Trades Editor ·Verified 19 August 2026
Cambridge throws up a wider mix of properties than a lot of towns its size, and that shapes what you'll need from a security installer. You've got Victorian terraces around Mill Road and Romsey with narrow hallways and old wiring, new-build estates out at Trumpington and Cambourne with modern consumer units ready for smart alarm integration, and plenty of student lets and HMOs near the city centre where landlords need compliant, tamper-resistant systems. Then there are the outlying villages, Fulbourn, Histon, Sawston, where response times and rural access matter more, and detached properties that might need CCTV covering larger gardens or driveways. A good installer should be able to talk through wired versus wireless systems, monitored versus self-monitored alarms, and how any of that fits with a listed building or a new-build warranty.
The businesses featured here come from public business listings, ranked mainly on review rating and how many reviews they've built up, with a small boost given to those showing a working website and phone number. We read each firm's homepage to check that alarm and security installation is genuinely what they do day to day, which stops general electricians or unrelated trades slipping onto the page. Listings flagged as permanently closed get removed as part of that process. Where you spot a Trust Verified badge, that business has gone through our fuller check, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history and registered company information; our How We Verify page sets out exactly what that involves. Businesses without the badge haven't been through that process with us, so it's worth running your own checks before booking.
Before you commit, ask any installer for proof of accreditation, such as NSI or SSAIB certification, since this affects insurance validity on monitored systems. Check whether they're offering a wired system tied into your existing consumer unit or a wireless setup with battery backups, and ask what happens if the broadband or mobile signal drops in a rural spot like Coton or Grantchester. Get a written quote that separates equipment, installation and any ongoing monitoring fees, and always get two or three quotes before signing anything, prices for a basic wireless alarm can range from around £250 to £600, while monitored systems with CCTV often start north of £800. Ask about warranty length and who you call if something faults at 2am.
How We Select & Rate The Best Alarm & Security Installers in Cambridge
Rankings are driven mainly by review rating and review count pulled from public business listings, with a small lift given to businesses showing a working website and phone number. We check each homepage to confirm alarm and security installation is genuinely the main service offered, which keeps unrelated trades off the page. Listings marked permanently closed are removed automatically. Businesses carrying a Trust Verified badge have additionally passed our fuller check covering trade qualifications and accreditations, public liability insurance, trading history, customer review history and registered company information; see our How We Verify page for the full detail. Other businesses listed haven't been independently verified by us, and appearing here isn't an endorsement, so do your own checks before hiring.
Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →
Quick Comparison — Alarm & Security Installers in Cambridge
Jackson Fire & Security is an alarm and security installer based in Cambridge, covering fire detection systems alongside intruder alarms and CCTV. The firm holds a 4.9 rating from 35 reviews, reflecting consistency across both domestic and commercial installations. Work typically spans system design, fitting and ongoing maintenance for local clients.
Cambridge properties requiring alarm and security systems are served by 3 Alarms Ltd, based in the CB1 area. The firm installs and maintains intruder alarms and related security equipment for homes and businesses. It holds a five-star rating from 19 reviews on Google, reflecting consistent feedback from local clients.
Intruder alarm installation for domestic and commercial premises forms the core of Citadel Security Services' work in Cambridge. The firm also fits CCTV systems and access control, tailoring specifications to the size and layout of each property. Sixteen reviews on Google have returned a full five-star rating, reflecting consistent standards across its installations.
Alarm Maintenance Ltd installs and services security alarm systems for homes and businesses in Cambridge. The firm covers ongoing maintenance as well as new installations, catering to properties that need regular system checks rather than a one-off fit. It holds a 4.1 rating from 29 reviews.
Families across Cambridge's northern suburbs turn to Bluemax Technology Support for CCTV and alarm installations that suit everyday households rather than commercial premises. The company works from the CB4 area, fitting systems designed to be straightforward for residents to operate day to day. Reviewers rate the work at 4.8 from 5, reflecting consistent care with each installation.
Alarm installation and security system work covering Cambridge and the surrounding villages, handled by Cambridge Alarms Ltd. The firm fits and maintains intruder alarms for domestic and commercial premises, with a 4.4 rating from local customers reflecting its ongoing work in the CB4 area.
Transparency notice: Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →
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How much does an alarm and security installer cost in Cambridge?
A basic wireless burglar alarm typically costs £250 to £600 fitted, depending on the number of sensors and whether it includes a keypad or app control. Monitored systems with 24-hour response cost more, often £25 to £40 a month on top of installation, and CCTV packages covering a typical semi in areas like Chesterton or Cherry Hinton can run from £400 to £1,200 depending on camera count and resolution. Larger properties or those needing wired systems through solid Victorian walls will push costs up due to extra labour. Always get two or three quotes, since prices vary a fair bit between installers offering similar kit.
Do I need planning permission for CCTV cameras in Cambridge?
For most homes, no, but cameras must only cover your own property, not point directly into a neighbour's garden or a shared passageway, otherwise you could fall foul of data protection rules. If you're in a conservation area, which covers a lot of central Cambridge including parts of Newnham and De Freville, check with the city council before fixing anything to the front of a listed or period property, as external alterations can need consent.
What's the difference between a monitored and unmonitored alarm system?
An unmonitored alarm sounds locally and might send an alert to your phone, but nobody else responds automatically. A monitored system is linked to a control centre, usually via broadband and mobile backup, and they'll contact you or the police if it triggers. Monitored systems cost more upfront and carry a monthly fee, but they suit anyone who travels a lot, runs a business premises, or has a property that's empty for long stretches, such as a rental near the station.
Can I get a smart alarm that works with my existing home network in Cambridge?
Most modern systems now integrate with home wifi and apps, letting you arm or disarm remotely and get push notifications. New-build areas like Trumpington Meadows or Darwin Green usually have strong enough broadband for this without issue. In older terraces with thick walls, ask your installer to check signal strength between the hub and any sensors before fitting, as wireless range can be patchy in some Victorian houses with solid brick internal walls.
How long does alarm installation usually take?
A standard wireless alarm for a three-bedroom house typically takes half a day to a full day, including setting up sensors, keypads and any app configuration. Wired systems take longer, often one to two days, since cabling has to be run discreetly through walls and floors. CCTV installation time depends on the number of cameras and whether cabling needs to go outside, but budget for a full day on most residential jobs.
How do I choose between alarm and security installers in Cambridge?
Start by checking whether the installer holds NSI or SSAIB accreditation, as this matters for insurance purposes on monitored systems. Ask to see proof of public liability insurance and ask how long they've been trading locally. Read through recent customer reviews yourself rather than relying on star ratings alone, and ask for references from jobs done nearby if possible. Get a written quote itemising equipment, labour and any monitoring costs, and confirm what warranty covers faulty equipment versus installation errors. If a business carries a Trust Verified badge on this page, that means it's been through a fuller check on our end, but for anyone without it, doing this legwork yourself before booking is worth the time.
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