By the DC Fire & Security engineering team — installing and maintaining fire and security systems since 2010. Updated June 2026.
Servicing quotes compare on five axes: visit frequency (6-monthly is the BS 5839-1 standard), testing scope (100% of devices annually via rotation — ask the percentage), callout terms (response hours, included or chargeable), parts/batteries policy, and certification deliverables per visit. Cheap quotes usually hide in scope: 50% annual testing and premium-rate callouts reverse the saving.
The economy patterns, named: rotation theatre (testing 25%/visit = full proof every two years — meets nobody's standard); drive-by servicing (panel-only checks, devices untested — fast, certificated-looking, hollow); callout harvesting (£45/visit headline, £180/hour attendance for everything found); parts mark-up structures (batteries at 3× trade, head replacements 'requiring' return visits); and certificate-without-scope documents that read right until a fire officer asks what was actually tested. None are illegal; all are answerable by the five axes asked in writing. The takeover surveys we run behind departed cheap contracts find the same estate every time: aged batteries, untested wings, log books of rubber stamps — deferred cost wearing a saving's clothes.
Get quotes against a stated scope (device count from your log book/asset register — or have bidders survey; guessing estates produce guessing prices), require the five axes explicitly, and weight whole-cost: visit fees + realistic callout exposure + parts policy across a 3-year view. Switching mechanics are easier than incumbents imply: certificates and log books are yours, takeover condition surveys (industry standard, ours included) baseline the estate honestly, and open-protocol systems (the panels guide's theme) transfer without drama — closed-protocol handcuffs are themselves a finding worth knowing. Bands for calibration: small conventional £200–£400/yr; single-loop addressable £300–£500; medium commercial £400–£900 — materially below those bands, re-read the axes; the gap is hiding somewhere you'll meet it later.
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