This crossword No. 12367 clues and answers were published on Wed 30 Dec 2009 and the puzzle can be visited by following The Guardian Quick Crossword No. 12367 link.
All Across Clues and Answers:
5-across – Subsistence level — queue for food : BREADLINE
8-across – Plant : MOSS
9-across – Strong East Mediterranean wind — relevant : LEVANTER
10-across – Optimistic : UPBEAT
11-across – Start again : RESUME
13-across – Offend : ENDOFF
15-across – Appertain : BELONG
16-across – Pieces of paper thrown at weddings : CONFETTI
18-across – Obligatory task : DUTY
19-across – Trojan horse — don’t accept it! : GREEKGIFT
All Down Clues and Answers:
1-down – Shakespearean magician : PROSPERO
2-down – Shakespearean prince : HAMLET
3-down – Fodder plant, common on lawns : CLOVER
4-down – Presently : ANON
6-down – Mate : COMPANION
7-down – Sprout — develop : GERMINATE
12-down – Become hard : SOLIDIFY
14-down – See 17 : FATHER
15-down – Structure spanning a divide : BRIDGE
17-down – Ancestor : FORE
This crossword has in total 20 where 10 are across and 10 are down.