Movie star Michael Sheen is set to open a new branch of a credit union in Edinburgh.

The Frost/Nixon actor and social campaigner is to promote the work of Castle Community Bank by officially launching its new premises in Great Junction Street on Tuesday.

It comes after he announced in March he planned to devote more time to the causes he supports.

Gordon Buchanan, general manager of Castle Community Bank, said: "Every day we provide loans to ordinary people and families across Edinburgh and Lothians enabling them to do the things they want in life - create or improve their family homes, buy a car or to help prepare for and manage life events, like having a baby or planning their wedding.

"We are constantly working to raise our profile and get that message out to more and more people, who may otherwise find themselves falling into a cycle of problem debt by taking out hire purchase agreements or pay day loans at punitive rates of interest which they can't really afford.

"It's our very real hope that having Michael cutting the ribbon on our new branch will get our name in front of an awful lot more people who may be interested in finding out more about us and maybe using our services."

Welsh-born Sheen was in Scotland a few weeks ago to launch the End High-Cost Credit Alliance, which he founded as part of his work against high-cost lenders - particularly the so-called "pay-day loans" companies.