TalkTalk services have crashed this morning leaving many customers without internet access.
Customers started reporting an issue at around 8am today, according to the website Downdetector.
Hundreds of reports of outages have now been recorded.
TalkTalk provides internet, TV and home phones, but users are only reporting problems with their internet and emails.
These customers are seeing problems across the country, with hotspots in London and Birmingham.
TalkTalk has more than 4million customers using home internet alone.
Users took to Twitter to flag the outage with the company.
One TalkTalk customer said: "I can login when on 4G mobile data but not with internet. Are there internet issues? My daughter has online Uni lessons later and will need internet!"
On Twitter, TalkTalk staff said the company knew about the issue.
"We're aware that some customers may be experiencing issues with their TalkTalk webmail account," the company said.
"We're sorry about this. Our engineers are working hard to fix the issue as soon as possible."
ATalkTalk spokesperson said the issue was for webmail, not internet or phone use, despite what customers are reporting.
The spokesperson said: "We're aware that some customers may be experiencing issues with their TalkTalk webmail account. We're sorry about this and our engineers are working hard to fix the issue as soon as possible."
TalkTalk customers can normally check if there are any widespread issues in their area using the company's service checker - but obviously not if their internet has crashed.
If your internet goes down you are entitled to compensation, but only if there is a full outage for at least two days.
This is thanks to the Automatic Compensation Scheme, which covers broadband and landline customers.
If your internet or broadband phone crashes you will automatically get £8 per day, once the two-day minimum is reached.
Last September The Mirror reported households will be able to get better broadband deals faster from 2023 thanks to an incoming service from media regulator Ofcom.
The deal, One Touch Switch, is meant to crack the problem of two-fifths of people not switching their internet deal due to the hassle.
The normal system of switching broadband requires customers to contact their old and new internet company at the same time.
Ofcom found their existing internet provider often made it difficult to switch. Also, customers had to line up the end date for one and the start date for another or face losing internet, making it much easier just to stay put - often paying above the odds.
The regulator said 41% who don't swap provider say it's too much effort. Around 43% say it takes too much time, while 24% face "unwanted attempts" from their old provider to get them to stay.
