How Much Do Missed CallsActually Cost UK Trades?
We crunched the numbers using FSB survey data, ONS wage statistics, and real trade business figures. The answer might make you wince.
of calls to small trade businesses go unanswered
FSB UK Micro-Business Survey 2025
of callers who hit voicemail won't call back
AlwaysOnBooking UK Trade Report 2026
of customers hire whoever responds first
JP Automations Consumer Study 2026
The Maths: How We Calculated It
The formula is straightforward but brutal:
Annual Lost Revenue =
(Missed Calls/Week × 52) × Conversion Rate × Average Job Value
Example — Plumber in Manchester:
- • Missed calls per week: 5 (while on jobs, driving, evenings)
- • Annual missed calls: 5 × 52 = 260 calls
- • Conversion rate: 35% (industry average for qualified plumbing enquiries)
- • Average job value: £280 (UK average plumbing call-out + repair)
- • Annual lost revenue: 260 × 0.35 × £280 = £25,480
That's £25,480 per year in lost revenue for a single plumber missing just 5 calls per week. For context, that's more than the average UK tradesperson's monthly wage (£2,120 — ONS 2024 data).
By Trade: What You're Losing
| Trade | Avg Job Value | Missed/Week | Conversion | Annual Loss |
|---|---|---|---|---|
| Plumber | £280 | 5 | 35% | £25,480 |
| Electrician | £320 | 4 | 30% | £19,968 |
| Roofer | £850 | 3 | 25% | £33,150 |
| Heating Engineer | £240 | 6 | 40% | £29,952 |
| Builder | £1,200 | 2 | 20% | £24,960 |
| Locksmith | £120 | 8 | 45% | £22,464 |
| Landscaper | £450 | 3 | 28% | £19,656 |
| Pest Control | £180 | 5 | 35% | £16,380 |
Sources: ONS 2024 average trade job values, FSB 2025 call volume survey, industry conversion rate data. Figures are estimates based on typical sole trader operations.
Why Calls Get Missed (It's Not Your Fault)
On the tools
Under sinks, up ladders, in lofts — physically impossible to answer
Driving between jobs
30-60 mins between sites, calls go to voicemail
Evenings & weekends
Customers call outside business hours
Existing customer calls
On a job, new enquiry goes unanswered
Signal dead zones
Basements, rural areas, new builds with poor coverage
Spam call fatigue
Stopped answering unknown numbers after too many spam calls
What AI Call Answering Actually Costs vs. What It Saves
AI Call Handling Cost
What You Save
"I sat down and counted my missed calls for a month. 23 calls. I converted 8 of them after switching to AI answering. At £240 average job value, that's £1,920 I was leaving on the table every month. The AI service costs me £59. It's not even a decision."— James R., plumber, Glasgow (interviewed for this article, May 2026)
Stop the leak. Start the trial.
whoza.ai's 7-day free trial costs nothing. See how many calls you've been missing — and how much revenue you can recover.