ACCA
The Association of Chartered Certified Accountants

www.accaglobal.com/en.html

AAT
The Association of Accounting Technicians

www.aat.org.uk

HMRC
Her Majesty's Revenue and Customs

www.hmrc.gov.uk

SAGE
Sage Software Main Site

www.sage.co.uk

QUICKBOOKS
Quickbooks Main Site

www.quickbooks.intuit.com/uk/