The details:

There are two presentations which walk you through setting up for gift aid.

• Presentation 1 can be found here
• Presentation 2 can be found here

You also need to ask all Parents to sign the Gift Aid form. A sample form that you can download can be found here, but a better way is to set it up in OSM which means you have less work to do and the parents only need to answer 4 questions.

Claiming:

Once you are registered, you can claim up to 25% of your subs plus donations. You do this online with the account you registered in step 2 above. You do this online with the account you registered in step 2 above. There are, however some rules which you need to follow. This short flow chart shows you what you can and cannot claim for.

There is also a web page issued by HMRC here which details some of this too.