The answer to clue 14D is somewhat controversial?
Overmodest up north at the end of the last century (3)Answer 'MIM'
This is  a Scottish word meaning 'demure, prim',and is perfectly correct,  but I think the letters MIM are also meant to apply to " the end of the  last of the last century" meaning 1999
There was a lot of controversy as to whether 1999 should be written as MIM or  MCMXCIX
I believe that the latter is usually accepted?
http://news.bbc.co.uk/1/hi/245709.stm