- Most/all of the UK professional accounting bodies recognise AAT level 4, and will give you exemptions from some/all of the first level of their own exams, e.g. http://www.cimaglobal.com/Our-locations/UK/find-out-about-jo...
- Totally agree, practical experience of accounting software is more important for a book-keeper than a deep understanding of double-entry. However, you've got to understand enough to be able to reverse/fix transactions when you/someone screws up.
- I've met candidates who claimed >1 year experience doing book-keeping, but couldn't answer this simple arithmetic problem (with a calculator): "If I buy a mug from the pound shop (for 1 pound), and the VAT rate is 20%, how much of what I paid was VAT?".
- I don't think AAT is a government body. (But I see the info on government subsidies for AAT courses: http://www.aat.org.uk/qualifications/funding)