From cracking the human genome to advancing medical research through computer games, British social entrepreneurs have a proud history of using technology to make the world a better place.

Last year, we launched the Global Impact Awards to support nonprofits using technology to tackle some of the world’s toughest problems. We gave $23 million to seven organizations working on projects ranging from aerial technology that protects wildlife to data algorithms that ensure more girls and minorities get placed in advanced math and science classes.

Today, as the next step in the Impact Awards, we’re kicking off our first Global Impact Challenge in the U.K., inviting British nonprofits to tell us how they would use technology to transform lives. Four nonprofits will each receive a £500,000 Global Impact Award, as well as Chromebooks and technical assistance from Googlers to help make their project a reality.

Applications open today, and registered British nonprofits are invited to apply online at g.co/impactchallenge. We’ll review applications and announce 10 finalists on May 22. At that point, people across the U.K. can learn more about the projects of the top 10 finalists, donate to the ones they like and cast a vote for fan favorite. On June 3, the top 10 finalists will pitch their concepts to a judging panel that includes us (Matt Brittin and Jacquelline Fuller), Sir Richard Branson, Sir Tim Berners-Lee and Jilly Forster. The three awardees and the fan favorite will be revealed at the event, which will take place at Google London.

Technology can help solve some of the world’s most pressing challenges and we’re eager to back innovators who are finding new ways to make an impact. Today we’re starting the hunt in the U.K., but we also know that nonprofits all over the world are using techy approaches to develop new solutions in their sector. Who knows, the Global Impact Challenge might head your way next.