Barclays is to open a string of branches in Asda stores from next year, offering seven-days-a-week banking services.
Eight branches will open by early 2014 under a pilot scheme in locations including Cheshire, West Yorkshire, Hertfordshire and East Kent.
Barclays said the move will offer its customers the flexibility of longer opening hours, which will mirror those of the Asda stores the branches are located in, as well as providing more convenient parking access.
It said that branches will be located in clearly defined and branded areas within the Asda stores, so that customers can do their banking in private.
The first branch will be opened in Asda Birchwood in Cheshire in February. Store trading hours will be from 8am to 10pm, six days a week and 10.30am to 4.30pm on Sundays.
A further three branches will open in Asda stores in Pudsey in West Yorkshire, North Watford in Hertfordshire and Broadstairs in East Kent, with the aim to extend the pilot to open eight branches in total by early 2014. The locations of the other branches are yet to be announced. B ranch facilities will be kept open to mirror the stores' trading hours.
Charlotte Nelson, spokeswoman for financial information website Moneyfacts, said: "Gone are the days of inflexible banking, customers now have more options than ever before, including longer opening hours, online and telephone banking and even mobile apps.
"With providers' customers living increasingly hectic lives, it's more important than ever for customers to be able to access banking facilities when they require.
"Despite an online presence it is still very important for customers to go into a bank as many processes still require this stage (such as) paying in a cheque."
Banks have been showing signs of raising competition to attract and retain customers following new rules introduced in September which make it easier for current account customers to ditch their existing provider and switch to a new one.
The new rules have cut the length of time it takes to switch a customer's bank or building society from up to 30 working days to seven and all incoming and outgoing payments are now automatically transferred to the new account.
Steve Cooper, head of Barclays retail and business bank, said: "We've spoken to our customers who use our everyday and business banking services in our branches and they've told us their time is precious so would benefit from being able to multi-task, park easily and visit branches with longer opening hours."
Karen Hubbard, executive director for property and multichannel at Asda, said that the trial is taking place in areas where the "communities need it most".
She said: "Access to banking services is an under-rated but important asset to any community but in many areas, these services just aren't available to families."