Personal / Regular / Individual /SIngle User Google Accounts
Legacy Google Apps Account (only free before 2013)
In the legacy free edition of Google Apps, secondary domains are not supported. The legacy free edition of Google Apps only supports domain aliases. All the other restrictions tied to domain aliases apply.
NFP Google Apps Account
If you are a UK NFP you will first need to register with TechSoup / TT Exchange
TT Exchange also give you discounts for NFP on other IT offerings
Google Apps for Work and Google Apps Unlimited are PAID for services see