It covers the 16 broadband and 6 digital TV providers available via the Decision Tech data stream, which powers our tool. These are BT, Direct Save Telecom, EE, Gigaclear, Hyperoptic, John Lewis, Now Broadband, Plusnet, Post Office, Shell Energy Broadband, Sky, SSE, TalkTalk, Virgin Media, Vodafone and Zen.
Our small editorial team then manually try and spot other deals that beat those from other comparison sites and nationwide providers (with reasonable service levels) - as usually the cheapest deals are short lived promotions. If we spot market leading deals elsewhere, we do our best to add them to the tool, in addition to deals we blag specially for MSE users.
Sadly, it is incredibly difficult to do a comparison that covers the whole market. This is because there are numerous firms that only cover limited regions that do not provide a data feed, meaning we'd have to manually input them all, which is a mega task. Yet there are a lot of small local providers that we can't list which occasionally may have cheap deals, so if you know of ones near you then it's always worth checking those too.
Also, some providers may restrict access to their exclusive deals, though we continually work to get as many into the tool as possible within the scope of our limited resources. While this doesn't cover the whole market, with all these added together we hope we've more deals than other comparisons.
We're always happy to hear about deals we might have missed, let us know by emailing the details to firstname.lastname@example.org. We'll take a look to see if it's good enough to include.