We are a UK charity registered with the Charity Commission of England and Wales. The UK Google Grants application asks you to attach 'Documentation of proof' of this in the application form - what exactly are they looking for as 'documentation of proof'? 

I can't find this info anywhere in the eligibility criteria or help centre and don't want to attach the 'wrong' documentation and have the grant refused. Any help anyone could give me on this would be great.