Multi-Network Comparison

Check Business Mobile Coverage by Postcode

Enter your business postcode below to compare property-level coverage scores across O2, EE, Vodafone and Three. Results are powered by real Ofcom data and show indoor voice, outdoor voice, indoor data and outdoor data for each address. You can email the results to yourself for easy reference. If you need a deeper review — tariffs, contracts, multi-site advice — request a free business mobile audit as a next step.

How the scoring works

Each address receives a score out of 16 for every network. The score is calculated from four metrics, each rated 0–4: indoor voice, outdoor voice, indoor data and outdoor data. A score of 16 means strong predicted performance across all four, while a lower score highlights areas of weakness.

When two or more networks share the same total score, a tie-break order is applied: Three, then O2, then Vodafone, then EE. This simply determines which network is listed as "best" when scores are equal — it does not mean one is objectively better than another at that address.

All data comes from Ofcom's Connected Nations reporting. Results reflect modelled predictions based on mast locations and terrain — real-world performance can still vary depending on your specific building and environment.

Why results can vary within one postcode

A single postcode can cover many different properties — offices, warehouses, shops and homes — each with different building materials, orientations and distances from the nearest mast. That is why this checker returns results for individual addresses rather than a single score for the whole postcode.

Two businesses on the same street can see different scores if one is in a modern steel-framed building and the other is in an older brick property. Read more about why business mobile coverage varies by location.

Why indoor data often lowers the total score

Of the four metrics, indoor data is typically the weakest. Voice calls need relatively little bandwidth and can tolerate weaker signal, but data — especially for video calls, cloud applications and large file transfers — needs a stronger, more stable connection.

Once a signal passes through walls, glazing and floors, data performance drops more noticeably than voice. For businesses where most work happens indoors, the indoor data score is often the most important number to compare across networks.

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