Last seen in:
- The Guardian - Quick crossword No 15,066 - Aug 20 2018
- The Guardian - Quick crossword No 14,157 - Sep 23 2015
- The Guardian - Quick crossword No 12,368 - Dec 31 2009
- The Times - Concise - Times2 Concise 4723 - December 30, 2008
- The Times - Concise - Times2 Concise 3680 - August 27, 2005
- The Guardian - Quick crossword No 10,583 - Apr 7 2004
Related Clues:
- Be quiet, twice - it's very secret
- You must never let on that Crete's hidden at the highest
- Classified a wig maybe?
- It's secret still, Mum
- Covert probing of NHS establishments by the Guardian repeated
- Destroy poster etc, which must be suppressed
- S is very hush-hush
- Broadcast protects English line on important document
- Classified summits on exotic Crete
- Poster etc can be very hush-hush
- Ordered to respect something extremely private
- Twice give a quiet admonition — it's confidential
- Highest classified (information)
- Highly classified
- Very hush-hush