This crossword No. 11789 clues and answers were published on Wed 20 Feb 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11789 link.
All Across Clues and Answers:
5-across – Opinion : POINTOFVIEW
7-across – Tidy : NEAT
8-across – Art of oratory : RHETORIC
9-across – Antagonistic : HOSTILE
11-across – Military trainee : CADET
13-across – Foolish : SILLY
14-across – Depraved : CORRUPT
16-across – Much reduced photographic image used in espionage : MICRODOT
17-across – Eating utensil : FORK
18-across – Featureless – tinned crops : NONDESCRIPT
All Down Clues and Answers:
1-down – Present : GIFT
2-down – Surprise : STARTLE
3-down – Later in time : AFTER
4-down – Monster of the Cretan labyrinth : MINOTAUR
5-down – Forewarning : PREMONITION
6-down – Turpentine substitute : WHITESPIRIT
10-down – Permissive : TOLERANT
12-down – : MORTICE
15-down – Summer – snake : ADDER
17-down – Frustrate – light sword : FOIL
This crossword has in total 20 where 10 are across and 10 are down.