Marks & Spencer’s website and app has not been working for several hours, with a message telling shoppers “you can’t shop with us right now”.
“We’re working hard to be back online as soon as possible,” it adds.
All the menus and images have disappeared apart from one showing a model in a green jacket.
Customers trying to use the app got the message: “Sorry you can’t shop through the app right now. We’re busy making some planned changes, but will be back soon.”
The site is understood to have been down for several hours.
Replying to one customer on X, the retailer said: “We’re experiencing some technical issues but we are working on it.”
M&S is the latest high street name to have technical issues – last month some Sainsbury’s shoppers had problems with their online orders.
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The outage comes a few days before M&S is expected to reveal a big jump in annual profits.
It’s been a successful year for the brand, with strong sales across the business following a turnaround plan that has included store closures and cost cutting.