Every penny of profit generated at Costa coffee stores on 14 June is to be donated to coffee-growing regions to help with the provision of school buildings, clean water and other facilities.

The funds will be channelled through the Costa Foundation, which was set up in 2006 so the company could "give something back to the communities within the countries from which we source our coffee beans".

In 2007-08, the foundation is building and maintaining schools within four communities in Colombia, Ethiopia and Uganda. "This is already making a big difference in regions where children have a three-hour walk to school, or have no access to clean water," the company said.