Broadband is now an essential part of our homes, with millions of us using it every day to keep in touch, stay entertained and work from home. With such reliance on a decent connection, it's always good to check just how well your internet access is performing, and it seems some Internet Service Providers (ISPs) are doing a better job than others when it comes to keeping the UK online.

New research from comparison firm has just revealed the best and worst UK providers when it comes to overall reliability, and it appears to be bad news for those using Three Mobile.

This popular telecoms firm ranked 17th out 21 - with only some smaller ISPs posting worse results for leaving customers dealing with frequent outages.

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Broadband Genie's survey showed that just 40% of Three's users hadn't suffered from any outages - that means 60% of Three users may have been left offline at some point.

That figure is compared to top-ranked Utility Warehouse who scored an impressive 93% of users without any issues.

One surprise was EE who only managed a position of 11th. EE's parent company, BT, came second overall with this provider one of the best for reliability and keeping its customers connected. With both using the same network it's strange to see EE performing so much worse that its BT sibling.

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Other winners include, TalkTalk, Sky, Plusnet and Virgin Media who were all in the top half of the table.

Here are the full results, including the percent of customers of the corresponding ISP that reported zero outages over the period:

1. Utility Warehouse - SCORE 93%

2. BT - SCORE 81%

3. TalkTalk - SCORE 77%

4. Plusnet - SCORE 72%

5. Virgin Media - SCORE 70%

6. Sky - SCORE 69%

7. Community fibre - SCORE 69%

8. Hyperoptic: 65%

9. Vodafone: 63%

10. NOW - SCORE 62%

11 . EE - SCORE 60%

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17 . Three - SCORE 40%

“It’s pretty shocking that in 2025 even one of the most reliable broadband providers in the UK still sees 19% of its customers experiencing broadband outages,” said Peter Ames, Broadband Expert at Broadband Genie. “If this level of service was delivered by other essential utilities, serious questions would be asked.”

Many of the studied broadband providers belong to UK regulator Ofcom’s automatic compensation scheme that lets you claim £9.67 per day if you still have no service for more than two full working days after first reporting the outage to your provider.

Broadband Genie advises that if you’re experiencing a loss of broadband connection but get your service from another ISP, you’ll have to request compensation directly from your provider.