This crossword No. 12582 clues and answers were published on Tue 07 Sep 2010 and the puzzle can be visited by following The Guardian Quick Crossword No. 12582 link.
All Across Clues and Answers:
5-across – County to the south of Hampshire : ISLEOFWIGHT
7-across – Old : AGED
8-across – Relating to a division of Switzerland : CANTONAL
9-across – Earthenware : POTTERY
11-across – Irritating : ITCHY
13-across – : OFFER
14-across – Plant used instead of coffee : CHICORY
16-across – Merry and laughing : MIRTHFUL
17-across – Church leader : POPE
18-across – Very large store : HYPERMARKET
All Down Clues and Answers:
1-down – Happy : GLAD
2-down – Stuff to eat at the cinema : POPCORN
3-down – Pretentious person : SWANK
4-down – Undecided : AGNOSTIC
5-down – Sincerely : INGOODFAITH
6-down – Least popular child in the class? : TEACHERSPET
10-down – Kenyan safari centre — canopy : TREETOPS
12-down – Resin for varnishing : SHELLAC
15-down – Burning : AFIRE
17-down – Fish — weapon : PIKE
This crossword has in total 20 where 10 are across and 10 are down.