YouTube, Gmail and Google services displayed error messages.
DownDetector, a website that detects whether sites are down, says that the issues started at around 11:56 GMT.
The site recorded more than 43,000 reports of YouTube being down.
( The Google owned family of apps went down for users/ Bloomberg via Getty Images )
At the same time, reports that Gmail was down also spiked, with more than 16,000 within a few minutes of the site crashing.
Other Google services also crashed, including Google sheets.
Those trying to access Yotube saw a message reading “oops”, a note saying that “something went wrong” and a picture of a monkey carrying a tool.