The Co-operative Group is considering extending its home delivery service to city centre stores across the country.

This week, the society launched a trial from two stores in Manchester, allowing shoppers who live within five miles of the stores on Corporation Street and Piccadilly Gardens to have their shopping delivered for free if they spend £25 or more on groceries.

Customers spending less than £25, and those who live just outside the five-mile radius, will be able to use the service for a £3 charge.

It is an extension to the Co-op Group's current home delivery service, largely inherited from its acquisition of Somerfield, which delivers to 330 food stores in towns and villages across the UK.

If the new trial proved successful, it would be rolled out to other city ­centre stores, said The Co-operative Food commercial director Sean Toal.

"Almost 800,000 people live in and around Manchester city centre, many of whom use public transport, bicycles or simply walk to get around," he added. "This service is ideal for those who may want to use their lunch hour to do their shopping, but don't fancy carrying it all the way home."