Mobile Coverage Check by Postcode
Enter any UK postcode to compare predicted EE, O2, Vodafone and Three signal at your business address — indoor and outdoor, voice and data — before you choose or renew SIMs.
Enter a UK postcode to compare likely business mobile coverage across all four networks in one view.
Want to see what the results look like first? View our sample coverage report or read how our coverage checker works.
How to read your results
The checker returns a result for individual addresses within your postcode, not a single score for the whole area. Each network is scored out of 16 — from four measures (indoor voice, outdoor voice, indoor data and outdoor data), each rated 0–4 — so you can compare EE, O2, Vodafone and Three like for like at the exact address where your team works.
Because signal is decided locally, always check the postcode where people actually work rather than relying on a national "best network" claim, and run it again for every other site and home-working address that matters.
For the full scoring method, tie-break behaviour and data source, see how our coverage checker works.
To understand why scores differ between offices, depots and warehouses, read why business mobile coverage varies by location.
For how the networks compare nationally before you check your own sites, see best mobile network coverage UK.
When to use the checker — and when to request an audit
The coverage checker is designed as a fast, self-service first step. It answers the question: how do the networks compare at this postcode? But for many businesses, coverage is only part of the decision.
Use the checker to compare networks at a specific postcode — it takes seconds and there is no limit on lookups.
Request an audit if you have multiple sites, complex usage or want help comparing tariffs and commercial fit alongside coverage.
The checker shows signal data; an audit adds contract review, usage analysis and a practical recommendation.
Want the full picture?
Our free business mobile audit reviews coverage at every location, compares costs across networks, and gives you a clear recommendation — no obligation.
Get a Business Mobile Audit