Just another quick note from Comucorp HQ. Gift Aid extension v2.2 has just been released, fixing some minor bugs and updating the Gift Aid report to include fields such as Post Code and Address.
More details on the extension can be found here.
For those who missed the details of v2.1 - check this previous blog post with details of how to install or upgrade from previous versions. For those with v2.1, the upgrade to v2.2 should be offered from within your CiviCRM if you navigate to your list of extensions.