You are a UK solo trade or team of 2-10 who loses money every month to missed calls, wants deposit direct debit and Google review automation on day one, and prefers a flat monthly fee over per-user pricing that scales unpredictably.
UK trade companies with 10+ vans running scheduled maintenance contracts (facilities, HVAC, plumbing at scale).
The side-by-side
Where Unavoidable CRM wins
- AI receptionist built in on every tier. Books surveys straight into your calendar.
- Missed-call SMS in 90 seconds. 62% of homeowners convert if they get that text within 4 hours.
- Native GoCardless direct debit for deposits. No chasing, no card fees.
- Flat £199/mo, unlimited users. No per-user creep, no surprise SMS credits.
- UK-hosted, GDPR from day one. UK phone support 9am to 5pm.
Where BigChange wins
Deep field service scheduling, GPS vehicle tracking, PODs and CarbonNeutral certification. Strong for larger UK trade fleets (10+ vans).
If that describes your business, BigChange is a strong pick.
Where BigChange falls short for most UK solo trades
Overkill for solo traders and 2-5 person outfits. Per-user pricing scales expensively. Long contracts. Setup takes 4-8 weeks with mandatory paid onboarding.
The biggest gap: BigChange does not include an AI receptionist or automated missed-call SMS out of the box. The average UK solo kitchen fitter loses £129,000/year to unanswered calls. Bathroom fitters lose £75,000. Heating engineers £105,000.
Head-to-head pricing
Migration: how hard is it to switch?
If you are already using BigChange, moving to Unavoidable CRM takes roughly 5-7 working days. Data export from BigChange is straightforward (CSV export of contacts, jobs, invoices). Import into Unavoidable CRM is guided by its onboarding team. No downtime: both systems run in parallel for the first two weeks so nothing slips. Unavoidable CRM is a separate product built and run by Unavoidable Studio Ltd.
Give your team a fortnight to unlearn BigChange’s specific workflow language. The tools do similar things but the terminology differs.
The verdict
Pick BigChange if uk trade companies with 10+ vans running scheduled maintenance contracts (facilities, hvac, plumbing at scale). Pick Unavoidable CRM if you are a UK solo trade or team of 2-10, want AI-answered calls and automated missed-call recovery on day one, prefer flat monthly pricing, and value UK-native support.
Want a second opinion?
Tell us your team size, what you are using, what you are paying. We will come back within 24 hours with an honest steer, even if the honest steer is “stay with BigChange.”
Answered personally by Andrew. Usually within a few hours. All fields required.