Facebook appears to have gone down in parts of the UK, leaving thousands of users unable to access their social media accounts.

The reason for the crash remains unknown, but 53 per cent of users have reported a total blackout on the site.

Facebook is yet to comment on the problem, or provide a fix, but reports suggest that switching to 'Incognito mode' on Google Chrome will rectify the issue.

The problems appear to have started at around 10:00am BST (05:00 EST), and users affected seem to be in the UK only.

On Down Detector, a total of more than 900 issues have been reported.

Of those issues, 53 per cent appear to be experiencing a total blackout with the site, while 37 per cent say they are having issues logging in.

And eight per cent claim the problem is with the Facebook app.

Facebook is yet to comment on the problem, or issue a fix.

However, according to a report on ZNet, going into 'Incognito mode' on Google Chrome appears to rectify the issue.

There have been no reports of problems when visiting Facebook through Internet Explorer or Safari, and most people say that they are able to access the site from their mobile device.

ZNet also says that a hard refresh, which clears the cache for a webpage, appears to be working for some users.