George launched a Christmas appeal for the Social Bite, a chain of sandwich shops which provides meals for the homeless and employment to Scots who have previously slept on the streets, after visiting the Edinburgh branch in November (15).

The actor filmed a video asking Brits to donate $8 (£5) to help provide Christmas dinners to the needy, saying, "I'm giving five pounds to pay it forward at Social Bite and I hope you do too."

The Hollywood superstar's plea gave a big boost to the organisation's fundraising efforts over the holidays, which generated more than $345,000 (£230,000) to help the homeless in Scotland and to send food and clothing to Middle Eastern refugees in camps in France, Serbia and Greece.

Around 1,000 hot dinners were given out to the homeless at the chain's five shops over the festive period, and the money raised will also help provide free meals for those in need throughout the year (16).

Social Bite co-founder Josh Littlejohn has thanked all those who helped with the appeal, including their most famous customer.

"We want to thank everyone who generously helped us - whether that's George Clooney who launched the campaign, (clothing company) Trespass who donated quality winter supplies or the members of the public who put their fiver into the pot to support our campaign," he tells WENN.