Monitoring contracts and recurring income

The chain the money travels along

The parent sector page makes the case that monitoring income is the most valuable revenue in the sector. This page is about how that income is actually constructed, because the structure underneath it decides whether the value is yours or somebody else's.

A monitored connection usually involves four parties. The end customer holds a contract with the installing and maintaining company. That company either operates its own alarm receiving centre or buys monitoring wholesale from a third-party centre. The centre handles the signal and, where the connection qualifies, requests a response from the police or the fire service.

The company's margin on monitoring is the difference between what it charges the customer and what the centre charges it. That spread is the asset. Everything below is about how durable it is.

Own centre or wholesale, and why it changes the business

A business that operates its own receiving centre is a different proposition from one that resells. The first carries the cost base, the staffing, the resilience obligations and the certification of the centre itself, and keeps the whole retail price. The second has almost no fixed cost per connection and keeps a spread.

Neither is better, and a lender will not treat one as automatically superior. What matters is that the two are assessed differently, and that a buyer knows which one they are buying. Resold monitoring is a lighter, more scalable business with a supplier who can move the price. An owned centre is a heavier business whose value is much more clearly its own.

The receiving centre agreement is part of the asset

Where monitoring is bought wholesale, that supply agreement deserves as much reading as the largest customer contract, because it can quietly hold the recurring revenue you are paying for. Extract five things from it.

Term and notice. How long it runs and how easily either side can end it.
Pricing and review. Whether the per-connection price is fixed, indexed, or open to change, and whether there are volume bands that reprice if the base shrinks.
Minimum volumes. Commitments that become expensive if connections are lost.
Change of control. Whether the agreement survives new ownership, and on what terms.
What happens on termination. Specifically whether the connections can be moved to another centre, who is treated as owning the account relationship, and what the practical process of moving them involves.

That last point is the one that catches buyers. A monitoring base that cannot practically be moved is a base whose supplier has a strong hand at every renewal, and a supplier's price rise comes straight out of the spread that services the debt.

Response, signalling and the re-sign events hiding in the base

Connections are not interchangeable. A connection with a police or fire service response attached is worth more to the customer and is tied to the company's own performance record, because repeated false activations put that response at risk. A base with a poor activation record therefore carries a commercial risk that never appears in the revenue line.

Signalling technology is the other thing to look at. Older communication paths get withdrawn as networks change, and every connection on a path that is being retired is a conversation with the customer that has to happen before it stops working. That is both a churn risk and a sales opportunity, and a business that has already worked through its base has removed a problem the buyer would otherwise inherit.

Ask for the base split by signalling type and by response level, not just by value. It takes a seller with a decent system ten minutes and it tells you where the next two years of work sits.

Deferred income, and the money you can pay for twice

Monitoring is very often billed annually in advance. That produces a balance of income received for service not yet delivered, and at completion that balance belongs to somebody.

If the seller has collected a year's monitoring in March and the deal completes in June, the buyer delivers nine months of service that has already been paid for. Unless the completion accounts deal with it explicitly, the buyer has effectively funded the seller's working capital and then paid a multiple for the revenue as well.

Worked exampleTake a base billing 240,000 a year, collected annually in advance across the year. At any completion date there is, on average, roughly half a year of income already collected and not yet earned, so a balance in the region of 120,000 sits in the business as an obligation to deliver rather than as profit. Whether that is adjusted for at completion is worth more to the buyer than several months of arguing about the price.

Put deferred income on the completion accounts agenda in the heads of terms. See heads of terms and completion.

Measuring churn so the number means something

Churn stated as a single figure is nearly useless. Ask for it three ways across at least three years.

By connection. How many accounts ended.
By value. How much annual revenue ended, which is usually the worse number, because larger accounts get competed for.
By reason. Site closed, customer sold, system replaced by another provider, price, service failure. A base losing connections because buildings closed is behaving very differently from one losing them to a competitor.

Then look at what replaced them. A base that lost accounts and won more than it lost is a growing business with normal attrition. A stable connection count that hides heavy loss and heavy replacement is a sales operation wearing an annuity's clothes. See how lenders assess recurring revenue.

You are bidding against professional buyers

Grant Thornton's review of the sector's 2025 transactions reports that private-equity-backed businesses, including several active consolidators, drove 70% of all fire and security deals that year, against 46.2% across the wider facilities services market, and that the sector remains highly fragmented with many businesses still owner-managed, particularly below £1 million of EBITDA. Grant Thornton advises on transactions in this sector, so this is an interested party's account rather than a neutral market statistic.[1]

Two practical consequences follow for a private buyer. The competition for a good monitoring base is experienced, well funded and quick, which means a buyer who has not sorted out funding before making an offer is at a disadvantage that has nothing to do with price. And the same buyers have taught sellers what a well-presented monitoring base looks like, so a schedule that arrives untested is worth investigating rather than trusting.

What a lender wants to see

Connection schedule: customer, site, connection type, signalling path, response level, monthly or annual value, contract start, minimum term, renewal date, notice period.
Two years of that schedule reconciled to the sales ledger.
Churn by connection, by value and by reason, over three years.
The receiving centre agreement in full, where monitoring is resold.
The deferred income position and how the completion accounts treat it.
Whether the company or the customer owns the installed equipment, which decides how easily a customer can leave.

Our document checklist covers the general pack, and accreditation risk on a change of control deals with the thing that most often has to be resolved before any of this matters.

Why the lender's experience decides the answer

A monitoring base is one of the few assets in the trades that genuinely behaves like a subscription book. A funder that has never seen one values the vans, finds a folder of service agreements and prices for the security it cannot see. A funder that has lent against monitoring income before starts from the connection schedule and asks about churn, the receiving centre agreement and the response record.

We know this market and we know specific people who have funded monitoring bases before and already understand that a connection schedule is worth more than the van fleet. Tell us the connection count, the churn history and the receiving centre position, and we come back to you with who can fund it and what they will want to see.

We introduce buyers who are acquiring through a limited company or a NewCo. If you are buying personally, as a sole trader or as a partnership, we will point you to an authorised firm directly instead.