The supermarket giant confirmed it was experiencing an issue with its website and app.
Many shoppers took to Twitter to express their frustration.
One user with the handle @Millmaaan said: “@Tesco When will your website be fixed? I need to amend my Click and Collect order before 12.15.”
Another, @KarenLindsay78, wrote: “@Tesco I’ve a click and collect order to complete before 12.15 and the website is not letting me, I have items to add and some items I no longer need in my basket. This is the message I get.”
A third, @foxyblue, tweeted: “@Tesco Do you have an eta when the website will be back up and running?”
Another, @HHarris777, said: “App and website still down..”
A fifth Twitter user with the handle @RonnieB91805312 posted: “@Tesco You site has issues, unable to to access the main website or app. What’s the timeline for fixing this?”
Another, @realcairyhunt, tweeted: “@tesco your website is broken. Mobile app too.”
One more, @alswifejacky, wrote: “@Tesco Your website is down. I keep getting the ‘something went wrong’ screen when trying to add goods to my basket.”
Tesco posted on Twitter: “We’re experiencing an issue with our website and app and are working hard to get things back up and running. We apologise for any inconvenience.”
MORE TO FOLLOW