- Ofcom publishes complaints data each quarter as the number of complaints per 100,000 subscribers, broken down by the largest providers.
- The metric normalises for size, so a large and a small provider can be compared fairly on rate rather than raw volume.
- The data covers complaints made to Ofcom, not every grumble, so it understates total dissatisfaction but is consistent across providers.
- It does not capture every small altnet, and a single quarter can be noisy, so look at the trend.
When every provider claims great service, Ofcom's complaints data is one of the few independent yardsticks a consumer can actually use. It is published, free, and consistent across the largest providers, which makes it more reliable than reviews or marketing. The trick is reading it for what it is.
What the data measures
Ofcom reports the number of complaints it receives about each large provider, expressed per 100,000 subscribers. Normalising per 100,000 is important: it lets you compare a provider with millions of customers against a smaller one on a like-for-like rate, rather than being misled by raw totals. A provider consistently above the industry average is fielding proportionally more escalations.
Where to find it
The data sits on Ofcom's website under its service-quality and complaints pages, updated quarterly. Each release breaks complaints down by service, including broadband, and lists the providers covered. It is worth checking the most recent two or three quarters together rather than a single snapshot.
What it does and does not tell you
It tells you how often customers escalate a complaint as far as Ofcom, which is a meaningful signal of unresolved problems. It does not capture every complaint, because many are settled, or abandoned, before reaching Ofcom, and it does not cover every small provider. It also says nothing about why people complained or about your specific address. Treat it as one input, weighted alongside speed guarantees and price.
Reading the table sensibly
| What to look at | How to read it |
|---|---|
| Complaints per 100,000 | Lower is better; compare to the industry average |
| Trend across quarters | A sustained pattern beats a single quarter |
| Provider coverage | Smaller altnets may not appear |
| Service split | Check the broadband line specifically |
Putting it to work
Shortlist on price and speed first, then use complaints data as a tie-breaker. If two deals are close, the provider with a consistently lower complaints rate is the safer bet. If your shortlist includes an altnet that the data does not cover, lean on independent reviews and the provider's code commitments instead.
Frequently asked questions
Where can I find Ofcom broadband complaints data?
On Ofcom's website under its service-quality and complaints pages. It is published quarterly, broken down by provider and service, including broadband.
What does Ofcom complaints data measure?
The number of complaints Ofcom receives about each large provider, expressed per 100,000 subscribers. The per-100,000 basis lets you compare providers of different sizes fairly on rate rather than raw volume.
Which broadband providers have the most complaints?
This changes each quarter, so check the latest Ofcom release rather than relying on an older figure. Look at the rate per 100,000 and the trend across recent quarters rather than a single snapshot.
Is a lower complaints rate always better?
A lower rate is generally a good sign, but the data only captures complaints escalated to Ofcom and does not cover every provider or explain why people complained. Use it as one input alongside speed guarantees, price and the provider's code commitments.
How often does Ofcom update complaints data?
Quarterly. Because a single quarter can be noisy, it is best to look at the most recent two or three quarters together to spot a sustained pattern.
