Check the Name on Your Alarm Panel: A Complete Guide to Intruder Alarm Takeover

Walk up to your intruder alarm keypad and read the top line of the display. Most control panels show the name of the company that installed them. If that company has been sold, renamed or has stopped trading, your system is not being maintained. It is simply switched on.

That distinction matters more in 2026 than at any point in the last thirty years. The analogue telephone network that carried alarm signals for decades is being switched off on 31 January 2027. Police response rules have tightened. Insurers increasingly treat a maintained, standards compliant system as a condition of cover rather than a discount.

An intruder alarm takeover resolves all three. This guide explains what it involves, what it protects, and how to work out whether you need one.

What is an intruder alarm takeover?

An intruder alarm takeover is the transfer of an existing alarm system from its original installer to a new maintaining company. The incoming company surveys the system, documents its condition against current standards, takes over servicing and monitoring, and where a police Unique Reference Number exists, coordinates its transfer. The equipment is normally kept.

The word takeover causes some confusion. It does not mean the system is replaced, and it does not mean ownership changes. It means responsibility for the system moves.

Five situations account for most of them.

The original installer has ceased trading, merged or been acquired
The current provider has become slow or difficult to reach
You have moved into premises with an inherited system and no records
The maintenance contract has lapsed and nobody has attended for years
The system needs work the current provider cannot or will not carry out

None of these are unusual, and none of them resolve on their own.

Why the name on the panel matters

The name on the display answers a question most premises managers cannot answer immediately: who is responsible for this system?

Under UK practice that question has a specific answer, not a vague one. Police response depends on a system being installed and maintained by a company recognised by one of the two industry inspectorates. Under PD 6662, the UK scheme document for intruder and hold up alarm systems, maintenance records must be kept and made available. Most commercial insurance policies require maintenance by a third party certificated company.

All three depend on a company being actively responsible. When the name on the panel belongs to a business that no longer exists, none of them are satisfied, and nothing on the keypad says so.

You can check a company’s accreditation yourself in about two minutes. The NSI Company Finder and the SSAIB supplier directory both allow a public search by name and postcode. If the company on your panel appears in neither, that is your answer.

Switched on is not the same as maintained

An intruder alarm degrades quietly. Four things go wrong in the background, and all four are invisible from the keypad.

Standby batteries reach end of life

Sealed lead acid batteries in alarm panels typically last three to five years. Once capacity drops, the system can no longer run through a mains failure, which is exactly when it is most likely to be needed.

PD 6662 sets the requirement: twelve hours of standby capacity for Grade 1 and Grade 2 systems, twenty four hours for Grade 3 and Grade 4. A battery that no longer holds charge meets neither, and the panel will not tell you until the power goes off.

Detection drifts out of relevance

Detectors are positioned against a specific layout and a specific pattern of use. Then a partition goes in. Racking is reconfigured. A mezzanine is added. The detection design was correct for a building that no longer exists, and nobody has reassessed it because nobody has attended.

Keyholder records go stale

The alarm receiving centre holds a list of people to contact when the system activates. Staff leave, numbers change, responsibilities move. Where that list is not maintained, a two o’clock activation produces a sequence of calls to people who left two years ago, and the escalation stalls there.

Signalling paths fail silently

This is the most consequential item on the list in 2026, and it has its own section below.

The 2027 phone line switch off

The UK’s Public Switched Telephone Network, the copper analogue network that has carried alarm signals to receiving centres for decades, is being permanently switched off on 31 January 2027.

Openreach has confirmed the date, having moved it once from December 2025 to allow more time for vulnerable users and safety critical devices. The national stop sell on copper products has been in force since September 2023, and BT Redcare, for years the most widely used alarm signalling service in the country, closed completely on 15 December 2025.

What actually fails, and how

A panel using an analogue dialler holds open a circuit to transmit its signal. When the line becomes digital or the exchange is decommissioned, the panel attempts to dial out, fails, and carries on as though nothing has happened.

Sirens still sound. The keypad still arms and disarms. The set tone is unchanged. The link to the receiving centre is simply gone, and nothing on site reports it. Industry guidance for installers describes this as a silent failure for exactly that reason.

Two things follow. Activations go unanswered, because no signal reaches the receiving centre, so no keyholder call is made and no police request is raised. And where a policy requires a monitored alarm, a communicator that no longer communicates becomes a problem discovered at the point of claim.

What the fix involves

Usually less than people expect. Most modern control panels can be migrated to dual path signalling: broadband as the primary path with a 4G mobile connection as backup, configured so that the loss of either path is itself reported as a fault. Replacement is only necessary where the panel is genuinely obsolete, and a survey establishes which situation applies.

Worth doing sooner rather than later. Demand for migration work and hardware climbs through 2026, and leaving it means competing for engineer availability with everyone else who left it.

If your monitoring paperwork mentions a phone line, a BT line, an analogue dialler or Redcare, that is an action item now. It is one of the most common findings on a takeover survey and one of the easiest to correct.

Police response and your URN

Police response to an intruder alarm is not automatic and it is not a property of the equipment. It depends on a Unique Reference Number issued by the local force to a specific address, under the NPCC Security Systems Policy.

This is the section that stops most people changing alarm company, usually on a misunderstanding.

Who qualifies for a URN

Systems installed and monitored by companies registered with the force are classed as Type A. Everything else is Type B, and a URN is not issued for Type B systems.

To hold a URN, a system needs to conform to PD 6662 and to BS 8243 where confirmed activation applies, be installed and maintained by an NSI or SSAIB approved company, and signal to an alarm receiving centre operating to BS EN 50518.

The three false call rule

A system holding a URN receives immediate police attendance, known as Level 1, until three false calls are recorded in a rolling twelve month period.

At two false calls, the force writes to the customer and the maintaining alarm company, copying the receiving centre. At three, the system drops to Level 3, which means keyholder response only and no police attendance. Recovering Level 1 requires an engineer to find and correct the cause, followed by a demonstrated false alarm free period, commonly around ninety days.

This is the clearest commercial argument for maintenance there is. False alarms are overwhelmingly caused by unmaintained detection, ageing equipment, environmental change and untrained users, and a service visit addresses every one of them.

Who owns the URN

Here is the part that matters most. A URN belongs to the property, not to the installer. Changing your maintaining company does not cost you the reference number. A transfer fee applies and the false alarm history moves with it, but the URN stays with the address, provided the incoming company is inspectorate approved and the change is notified to the force and the receiving centre.

A URN cannot, however, move to a different address. If you relocate, a fresh application and the full fee apply at the new premises.

And a system with no maintaining company at all cannot hold Level 1 indefinitely, because the policy assumes an accredited company is responsible for it. That is the risk of doing nothing, not the risk of switching.

What a proper maintenance visit includes

Maintained means an engineer has attended and tested the system. It does not mean a direct debit is running.

BS 9263 covers intruder alarm maintenance, and frequency follows system grade. Grade 1 and Grade 2 systems require one site visit a year. Grade 3 and Grade 4 systems require two, or one site visit plus one remote system check. Monitored systems with police response are also subject to the requirements of the receiving centre and the local force.

A compliant visit covers the control panel and power supply, functional testing of every detector against the current building layout, confirmation that the standby battery still achieves its rated duration, verification that signalling reaches the receiving centre on every available path, tamper circuits, external sounders and strobes, and an update of keyholder records. It ends with a written report and a logbook entry, not a verbal all fine.

PD 6662 also sets a records requirement worth knowing as a customer. Records of maintenance, temporary disconnections and remote support, together with any corrective action taken or required, must be kept for a minimum of fifteen months so that a full audit trail exists.

Ask your current provider to produce that trail. If they cannot, you have your finding, and it cost you nothing.

What your insurer actually requires

Insurers rarely specify a brand. They specify a standard, a grade and a maintenance regime.

Guidance from the British Insurance Brokers’ Association sets out the position: systems should be designed, installed and maintained by an NSI or SSAIB listed company, monitored systems should connect to a listed alarm receiving centre, and inspectorate listing is essential to obtaining a police URN. Grades 2 and 3 are the ones most commonly specified.

Read your own schedule. The alarm condition is usually one clause, and it usually says more than people expect. Common wording covers the required grade, maintenance by a third party certificated company, a requirement that the system is set whenever the premises are unoccupied, and a duty to notify the insurer of any change to the system or its monitoring.

An unmaintained system fails at least one of those in almost every case. A takeover restores compliance without disturbing the policy, provided the incoming company holds the right approvals.

When your installer stops trading

Alarm companies close, merge and get acquired regularly, and customers are rarely told directly. The consequences surface later.

Engineering records are lost. Panel programming, zone charts, cable routes and commissioning data disappear with the business. The next company starts from nothing.
Monitoring contracts move without you. Contracts are often sold on as an asset, so you find yourself monitored by a company you did not choose.
Police response falls away. The policy assumes an accredited maintaining company. Without one, the basis for Level 1 no longer holds.
Proprietary equipment stays locked. Some panels are engineer coded, and where the code was held only by a business that no longer exists, options narrow.
Faults have nowhere to go. The number on the sounder box rings out, and the system stays faulty until somebody new attends.

None of this is rare, and none of it is difficult to fix. It just does not fix itself.

How a takeover works, step by step

Full Circuit take over intruder alarms installed by other companies across Blackburn, Preston, Burnley, Accrington and the wider North West, regardless of who fitted them, how old they are, or whether they currently have a fault.

1. Survey

An engineer establishes what is installed, how it is configured, what grade it was built to and what condition it is in. Signalling is checked specifically, because that is where the 2027 deadline bites. Most commercial sites take under an hour.

2. Report

You receive a written report identifying defects, missing documentation and equipment approaching end of life, citing the relevant standard wherever something falls short. The report is yours whether or not you proceed.

3. Quotation

Remedial work is quoted separately and itemised. Accepting it is never a condition of the maintenance agreement, and the two are priced independently.

4. Transfer

The system moves onto a planned service schedule under an intruder alarm maintenance agreement. Monitoring transfers and, where a URN exists, the change of maintaining company is coordinated with the receiving centre and the force so that response continues without a gap.

5. Records

Documentation, logbook, zone chart and keyholder details are brought up to date and kept current from that point on.

What it costs

There are three separate figures, and conflating them is how people end up confused.

The survey is free and carries no obligation. Remedial work is quoted separately after the survey, because it depends entirely on what is found, and a system that has been serviced regularly may need nothing at all. The ongoing maintenance agreement is priced against system grade, site size, device count, visit frequency and whether monitoring is included.

Signalling migration is worth treating as its own line. Published industry figures put a typical cost for moving an existing monitored system from an analogue dialler to IP or mobile signalling in the region of £150 to £400 for the visit and equipment, with ongoing monitoring charges broadly comparable to the analogue equivalent. That is an indicative market range rather than a Full Circuit quotation, and the actual figure follows the survey.

The comparison worth making is not takeover cost against zero. It is takeover cost against a system that does not signal, an insurance condition that is not met, or a response level that has been downgraded.

Seven checks you can make this week

You can establish most of your position yourself, without an engineer, in under ten minutes.

Read the panel display. Note the company name on the keypad, then check whether that company still trades and still covers your area.
Check their accreditation. Search the name in the NSI Company Finder or the SSAIB supplier search. If they appear in neither, your system is being treated as Type B.
Find your last service certificate. If you cannot produce one dated within the last twelve months, assume the system has not been serviced.
Check how your system signals. Any mention of a phone line, a BT line, an analogue dialler or Redcare needs attention before January 2027.
Confirm your keyholders. Ask the receiving centre who they currently hold, then check whether those people still work for you.
Read your insurance alarm condition. Look for a required grade and a requirement for maintenance by a third party certificated company.
Count your false alarms. Two in the last twelve months puts you one activation away from losing police response, and the cause needs finding now rather than after the third.

If any of those come back uncertain, a takeover survey will resolve them.

Fire alarms and BS 5839-1:2025

The same questions apply to fire detection, and the standard has recently changed. BS 5839-1 was fully revised in 2025, replacing the 2017 edition on 30 April 2025. The Fire Industry Association guidance note covers the detail. The headline items are these.

Heat detectors are no longer recommended in rooms where people sleep
Maximum signal transmission times to the receiving centre are now specified
A new section covers cyber security and remote access to control equipment
Zone plans are a requirement rather than a permitted variation
Documentation, handover and cause and effect matrices are tightened
Even minor extensions and modifications require a modification certificate

The changes are not retrospective, so an existing compliant system does not become non compliant overnight. They do apply when a system is extended, modified or upgraded, which is exactly what happens during signalling migration work. Fire alarm signalling over analogue lines faces the same 2027 deadline, and Full Circuit take over fire alarm systems on the same basis as intruder alarms.

Frequently asked questions

How do I find out who maintains my intruder alarm?

The maintaining company’s name is usually on the panel display, on a label inside the panel housing, or on the external sounder box. Your accounts will show a maintenance or monitoring payment if one is active. If none of those produce a current answer, the system is most likely unmaintained.

Am I tied to my current alarm company?

Check the notice period in your agreement. Many maintenance contracts renew automatically with a notice window of one to three months. A takeover survey can be carried out while your existing contract is still running, so the two do not have to happen in sequence.

Will I lose police response if I change alarm company?

No. The URN belongs to the property rather than the installer. A transfer fee applies and your false alarm history transfers with it, but the number stays with the address, provided the incoming company is NSI or SSAIB approved and the change is properly notified to the force and the receiving centre.

What if my system has already had false alarms?

The rolling twelve month count continues and moves with the system. Where a system is approaching the three call threshold, the priority at takeover is finding and correcting the cause. Where response has already dropped to Level 3, restoration requires the fault to be fixed and a false alarm free period to be demonstrated.

Does the 2027 switch off mean I need a new alarm?

Usually not. In most cases the control panel remains suitable and only the signalling device needs changing, to a dual path communicator using broadband with a mobile backup. Full replacement is required only where the panel itself is obsolete or no longer supported.

How will I know if my signalling has already failed?

You will not know from the panel, which is the difficulty. An analogue dialler fails silently: sirens still sound and the keypad still arms normally. The only reliable check is a signalling test carried out with the alarm receiving centre, which forms part of a takeover survey.

How often should my intruder alarm be serviced?

Grade 3 systems require two site visits a year, or one site visit and one remote check. Grade 1 and Grade 2 systems generally require one. Monitored systems are also subject to the requirements of the receiving centre and the police force, and most insurers require servicing by an accredited company.

Can you take over an alarm made by any manufacturer?

Full Circuit maintain most major panel manufacturers. Where a system is proprietary and locked to a single company, or where spare parts are no longer produced, that is stated plainly in the survey report along with the available options rather than discovered later.

Can you take over a system that already has a fault?

Yes. An existing fault does not prevent a takeover. It is identified in the survey report and quoted for separately, and you decide whether to have it corrected before or after the maintenance agreement starts.

What if my system turns out to be non compliant?

The report will say so, and will name the standard it falls short of. What you do about it is your decision. Full Circuit do not make a maintenance contract conditional on buying a replacement system.

Do I need to tell my insurer I have changed alarm company?

In most cases yes. Insurance schedules commonly require notification of any change to the alarm system or its maintenance and monitoring arrangements. It is a short email, and far better done at the time than discovered at claim stage.

How long does a takeover take?

The survey is normally under an hour and the written report follows within a few working days. Where a URN transfer is involved, coordination with the receiving centre and the force typically adds one to two weeks, during which existing cover continues.

Is the takeover survey chargeable?

No. Full Circuit takeover surveys are free and carry no obligation, and the written report is yours whether or not you proceed.

Does this apply to fire alarm systems as well?

Yes. Fire systems can be taken over on the same basis, and the same signalling deadline applies. BS 5839-1 was revised in 2025, with changes to detection in sleeping areas, signalling times and documentation, so a system that has not been reviewed recently is worth surveying.

Find out where you stand

If you are not certain who maintains your intruder alarm, when it was last serviced, or how it signals to the receiving centre, a survey answers all three in about an hour.

Request a takeover survey