Wireless alarms
Ajax wireless systems for finished, lived-in homes. No chasing, no redecorating, app control and instant alerts.
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All 32 London boroughs · Home Counties
Burglar alarm installation in London
Burglar and intruder alarms for London homes, flats and businesses — from Victorian terraces and mansion-block flats to 1930s semis and high-street shops. Wireless or wired, new systems or upgrades of the alarm you already have. Surveyed in person, priced in writing, fitted and set up on your phone.
- Installing since 2012
- 3,000+ installations
- 12-month guarantee on the installation
- Covering all of London
Alarms we install in London
Burglar and intruder alarms, designed for your property
New systems, upgrades of old panels, takeovers of alarms other companies fitted, and servicing — for houses, flats, shops and offices. Every system is designed from a survey of the property, never from a fixed kit.
Wired & hybrid alarms
Texecom and Pyronix wired systems for renovations and new builds, cabled at first fix and installed at second fix.
Texecom alarms →Upgrades & takeovers
Old panel, lost engineer code, or an alarm the last owner left behind? We keep sound wiring and sensors and replace the panel.
Alarm upgrades →Servicing & repairs
Beeping keypads, false alarms, flat batteries and faulty detectors on Texecom, Pyronix, Visonic, Risco and other makes.
Alarm servicing →Designed for the property in front of us
Alarm design for London properties
London's housing changes street by street, and so does the right alarm. A system is designed from the property's doors, windows, rooms and routes in — not picked from a kit — so the price you pay matches the protection you actually need.
Inner and south London streets
Long, narrow houses with a front door, a back door or French doors to the garden, and often a side return or rear extension. Rear access along the gardens is the usual weak point.
- Contacts on every external door, detectors in each ground-floor room
- First-floor rooms reachable from extension roofs covered too
- Shock sensors on accessible rear windows for higher protection
Outer London suburbs
Front and side access, long gardens and frequently a garage, loft conversion or garden office. A wireless system covers the house in a day, with outbuildings added on the same app.
- Garden rooms and garages on the same system
- Pet-tolerant detectors where there are dogs or cats
- Keypads where the family actually comes in
Central London and converted houses
Protecting a flat is about the front door and the rooms behind it. We fit compact wireless alarms run from your phone, and nothing goes on the outside of the building without the freeholder or managing agent's agreement.
High streets and trade estates
Businesses need an alarm that reports to the owner's phone, sensible zones for stockrooms and offices, and opening and closing alerts. We design for the way the premises is actually used, with optional professional monitoring.
Planning: alarms and bell boxes on houses do not normally need planning permission, but listed buildings need consent before anything is fixed to them, and many London boroughs have conservation areas where it is sensible to check first. We advise at the survey.
Guide prices
What a burglar alarm costs in London
Starting prices so you can budget. Your exact price comes from the survey and is fixed in writing before anything is booked.
Most homes
Wireless Ajax alarm
From £995 inc VAT
- Finished, lived-in homes
- App control and instant alerts
- Usually fitted in a day
Wired or hybrid alarm
From £1,995 inc VAT
- Renovations and new builds
- Cable already in, or run at first fix
- Texecom, Pyronix or Ajax Hybrid
Alarm upgrade
From £495 + VAT
- New panel and keypad
- Existing wired sensors kept
- Takeovers of other firms' systems
Prices depend on the number of doors, windows and rooms. Anything that adds cost — an outbuilding, long cable runs, scaffolding — is flagged at the survey, never on the day. Monitoring and SIM connectivity are optional extras quoted separately.
How it works
From first call to protected
Free site survey
We walk the property with you and check every door, window and approach before anything is priced.
Fixed written quote
Every device by make and model, the labour and the payment terms. Usually with you within 24 hours.
Installation day
Dust sheets down, tidy cable routes, and every detector walk-tested before we leave.
Handover
App set up on your phones, everyone shown how to arm and disarm, and a completion certificate for your records.
Where we work
Burglar alarm installation in every London borough
Choose your borough for local information, or call us — we cover all 32 London boroughs and the Home Counties from our base in Harrow.
Barking & DagenhamBarnetBexleyBrentBromleyCamdenCroydonEalingEnfieldGreenwichHackneyHammersmith & FulhamHaringeyHarrowHaveringHillingdonHounslowIslingtonKensington & ChelseaKingstonLambethLewishamMertonNewhamRedbridgeRichmondSouthwarkSuttonTower HamletsWaltham ForestWandsworthWestminster
Towns around Harrow
Free, no obligation
Book a free alarm survey in London
Tell us a little about the property and what's worrying you. We'll call back the same working day to book a time.
- ✓Call us020 8422 7918
- ✓Emailinfo@satfocussecurity.co.uk
- ✓HoursMon–Fri 8am–6pm · Sat 8am–5pm
FAQs
Burglar alarms in London: your questions answered
How much does burglar alarm installation cost in London?
A wireless Ajax alarm starts from £995 including VAT, a wired or hybrid system from £1,995 including VAT, and an upgrade that keeps your existing wired sensors from £495 + VAT. The final price depends on your doors, windows and rooms, and is fixed in writing after a free survey.
What is the difference between a burglar alarm and an intruder alarm?
Nothing — they are two names for the same thing: a system of door contacts, motion detectors and sirens that detects someone entering your property and alerts you. Installers and insurers tend to say intruder alarm; most homeowners say burglar alarm.
Do you install alarms in flats?
Yes. Flats get a compact wireless system covering the front door and the rooms behind it, controlled from your phone. Anything fixed to the outside of the building, such as an external siren, needs the freeholder or managing agent's agreement first.
Can my alarm alert me on my phone?
Yes. The systems we install send instant alerts to your phone and let you arm and disarm from anywhere. Professional monitoring by an alarm receiving centre is an optional extra, quoted separately.
Which boroughs do you cover?
All 32 London boroughs, from Harrow and Hillingdon in the west to Havering and Bexley in the east, plus the Home Counties. Choose your borough above for local information.
Wired or wireless — which is right for my home?
If your home is finished and lived in, wireless is usually best: no chasing walls, no redecorating, and most homes are done in a day. If you are renovating, a wired system run at first fix before plastering is the better long-term choice, installed at second fix once decorating is done.
Can you take over or upgrade my existing alarm?
Usually, yes — including systems we did not install. Where the existing wiring and detectors prove sound we keep them and replace the panel and keypad, which costs far less than a new system and can add smartphone control.
What guarantee do I get?
A 12-month guarantee on our installation work, alongside the manufacturer's warranty on the equipment we supply. You also receive a completion certificate for your records.
Ready to protect your London property?
Free survey, fixed written price, no obligation.