Tesco say website and app down after hack attempt

Tesco’s website and app have crashed after what the retail giant said were attempts “to interfere with our systems”.

The possible hack at Britain’s biggest supermarket began on Saturday with shoppers unable to order goods and track deliveries.

Tesco initially said there was “an issue”, but in a Sunday update said there had been deliberate disruption.

The retailer sought to assure customers their data was safe.