- The advertised price is only one input. The minimum guaranteed speed, contract length, out-of-contract price and the provider's complaints record all change the real value of a deal.
- Ofcom publishes complaints data per 100,000 customers each quarter, broken down by provider, so you can compare how often customers escalate problems.
- Providers that sign Ofcom's Broadband Speeds Code of Practice must give you a minimum guaranteed speed and a right to exit penalty-free if that speed is not met.
- Comparison sites only list providers they have commercial arrangements with, so smaller altnets and some direct-only deals never appear.
Choosing broadband on monthly price alone is how households end up locked into a slow line with a provider they cannot reach when it fails. A sensible comparison treats price as one column among several. The information you need is largely published and free: Ofcom's quarterly complaints tables, each provider's speed code commitments, and the contract documents an ISP must give you before you sign.
Start with the speed that is actually guaranteed
Advertised speeds describe the package name, not what arrives at your socket. The figure that matters is the minimum guaranteed speed an ISP gives you at the point of sale under the Broadband Speeds Code of Practice. That number is contractual: if your real-world speed drops below it and the provider cannot fix it within 30 days, you have the right to leave without an exit fee. Ask for it in writing before ordering and compare it across shortlisted providers, because two packages advertised at the same "up to" headline can carry very different guarantees.
Use Ofcom complaints data as a tie-breaker
Ofcom publishes complaints volumes per 100,000 subscribers each quarter for the largest providers. It will not capture every smaller altnet, but for the big names it is the closest thing to an independent service-quality signal. A provider that is consistently above the industry average quarter after quarter is telling you something that a glossy advert will not. Treat a single quarter cautiously, but a sustained pattern is meaningful.
Read the contract length and the out-of-contract price together
A cheap 24-month deal can cost more over its life than a slightly dearer 18-month one once the post-discount price kicks in. Always find the out-of-contract monthly figure, because that is what you pay if you forget to renegotiate. A provider that hides this, or makes the renewal price hard to find, is a provider whose long-term cost you cannot model.
What comparison sites do not show you
Price-comparison websites earn commission, so their tables are populated by providers who pay to be listed. Local altnets, community networks and some retailer-exclusive or direct-only deals can be entirely absent. Use comparison sites to scan the mainstream market, then check your exact address directly on the providers' own sites and on any altnet operating in your street.
A weighting that reflects real costs
| Assessment criterion | Suggested weight | Where to find it |
|---|---|---|
| Minimum guaranteed speed | High | Provider quote / Speeds Code |
| Total cost over contract (incl. out-of-contract price) | High | Contract / order summary |
| Ofcom complaints rate | Medium | Ofcom quarterly data |
| Contract length and exit terms | Medium | Contract |
| Upfront and setup charges | Medium | Order summary |
| Codes of practice signed (speed, auto-compensation) | Low to Medium | Ofcom / provider site |
Frequently asked questions
What should I look for when comparing broadband?
Look beyond the monthly price at the minimum guaranteed speed, the total cost across the whole contract including the out-of-contract price, the provider's Ofcom complaints rate, the contract length and exit terms, and whether the provider signs Ofcom's speed and automatic compensation codes.
Is price the most important factor when choosing broadband?
Price matters, but it is not decisive on its own. A low headline price attached to a weak minimum guaranteed speed, a high out-of-contract price, or a provider with a poor complaints record can be worse value than a slightly dearer deal with stronger guarantees and service.
How do I use Ofcom complaints data to choose a provider?
Ofcom publishes complaints per 100,000 customers each quarter by provider. Compare your shortlisted providers against the industry average, and weight a sustained pattern over several quarters more heavily than a single quarter, which can be noisy.
Do broadband comparison sites show all providers?
No. Comparison sites generally list only providers they have a commercial arrangement with. Smaller alternative networks, community broadband schemes and some direct-only deals may never appear, so check your exact address on providers' own sites as well.
What is the Ofcom Broadband Speeds Code of Practice?
It is a voluntary code that signed-up providers follow. It requires them to give you a realistic estimated speed and a minimum guaranteed speed at the point of sale, and to let you exit without penalty if your speed falls below the guarantee and is not fixed within 30 days.
