Hi,
A few additional comments.
This is a tricky question, and I think there may sometimes be different views on certain aspects of it.
Where degrees are in the same field, only the highest is usually written,
eg not BA, MA, but simply MA.
eg BA, M.Sc.
In the non-academic world, often only the highest is given, eg Ph.D. rather than BA, MA, Ph.D.
Some institutions have their own standards, eg academics at Oxford list non-Oxford degrees and the granting universities in parentheses, following their Oxford degrees, eg MA (Ph.D., Cambridge).
There is also the matter of professional qualifications such as QC (Queen's Counsel) and membership of learned societies, eg FBA (Fellow of the British Academy Academy). I think that with these, we can leave it on the basis that if you have the qualification, you probably know where to put it. ![Wink [;)]](/emoticons/emotion-5.gif)
Best wishes,
Clive, FEF (Fellow of English Forums)