The Guardian and Observer newspapers are teaming up with New Philanthropy Capital for their 2010 Christmas charity appeal, which for the first time will require each charity applicant to clearly communicate the impact their charity makes.

The appeal is looking to find the most transformative charities and projects working with young people aged 13-24 at risk in the UK. NPC has worked with the Guardian and Observer to develop the application form for charities to use.

Successful applicants will be asked to talk about the problem they’re addressing, the outcomes of their work and the evidence they’re gathering to prove their impact. They’ll also be innovative, having thought about what does and doesn’t work in their field, and making a conscious decision to do something different and more effective.

If you are a charity interested in applying for the Guardian and Observer Christmas Appeal you can do so on the Guardian website.