This crossword No. 11791 clues and answers were published on Fri 22 Feb 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11791 link.
All Across Clues and Answers:
1-across – Having friends in high places : WELLCONNECTED
8-across – Reduce in worth : DEGRADE
9-across – Transparent solid for dispersing light : PRISM
10-across – Conspire – small piece of land : PLOT
11-across – Drifting marine organisms : PLANKTON
13-across – Jaunty : RAKISH
14-across – Flag – officer : ENSIGN
17-across – Edible fungus : MUSHROOM
19-across – Only – fish : SOLE
21-across – Coach – string of coaches : TRAIN
22-across – Quarter towards which the wind blows : LEEWARD
24-across – Police collection of photos of known criminals : ROGUESGALLERY
All Down Clues and Answers:
1-down – Small bundle : WAD
2-down – Ship’s record : LOGBOOK
3-down – Type of soil used in ceramics : CLAY
4-down – Sewing implement : NEEDLE
5-down – Interpretive artist – open next : EXPONENT
6-down – Contaminate : TAINT
7-down – Control : DOMINANCE
10-down – Enclosing boundary : PERIMETER
12-down – Alienate : ESTRANGE
15-down – Place in seclusion : ISOLATE
16-down – Sharp bend : DOGLEG
18-down – Non-standard vocabulary : SLANG
20-down – Close up – marine mammal : SEAL
23-down – Lacking moisture : DRY
This crossword has in total 26 where 12 are across and 14 are down.