Tesco has claimed to be the first retailer to offer nationwide same-day grocery delivery.

Following its success at Tesco stores in London and the south east of England, the retailer will roll out the service to more than 300 stores across the UK. The same-day delivery service will come into effect by the end of August.

Customers can order by 1pm to have their shopping delivered from 7pm onwards and receive an unlimited number of items. The new service is priced between £3 and £8, but is free for a limited period to members of Tesco’s online delivery membership scheme, Delivery Saver.

Same-day delivery will be available for six days a week (Monday to Saturday) for most of the country, but will remain available seven days a week for London and the south east of England.

Tesco said its same-day deliveries were proving increasingly popular, with an 18% growth in demand for the service so far this year.

“Customers tell us they like getting their shopping delivered quickly and conveniently, and with our same-day delivery service they can now order by lunch to get their shopping delivered for their evening meal,” said Tesco’s managing director Adrian Letts.

“We’ve seen the service grow in popularity since we launched it in London and the south east, so we’re really excited to be rolling it out to customers nationwide.”

Earlier this year Tesco also extended its Same Day Click & Collect service to 300 locations across the UK.