This crossword No. 10578 clues and answers were published on Thu 01 Apr 2004 and the puzzle can be visited by following The Guardian Quick Crossword No. 10578 link.
All Across Clues and Answers:
1-across – Ridiculously complex in design : HEATHROBINSON
8-across – L-shaped support – one of a pair enclosing text : BRACKET
9-across – Temptress – warning device : SIREN
10-across – Annoy through excessive sweetness : CLOY
11-across – Smug self-righteousness : PRIGGERY
13-across – Reaper’s tool : SCYTHE
14-across – Small restaurant : BISTRO
17-across – It’s useless in the body, but useful in a book : APPENDIX
19-across – Border on : ABUT
21-across – Very choppy : ROUGH
22-across – Plant with drooping purple, red or white flowers : FUCHSIA
24-across – Inveterate : DYEDINTHEWOOL
All Down Clues and Answers:
1-down – Cooking surface : HOB
2-down – Study of : ANATOMY
3-down – Fish : HAKE
4-down – Widespread protest : OUTCRY
5-down – Badge : INSIGNIA
6-down – : SPREE
7-down – Billy’s partner? : NANNYGOAT
10-down – Played the other leading role : COSTARRED
12-down – Kidnap – Chinese port : SHANGHAI
15-down – Hot sauce : TABASCO
16-down – Weirdo : MISFIT
18-down – Shrivelled fruit : PRUNE
20-down – Height of achievement : ACME
23-down – Everyone : ALL
This crossword has in total 26 where 12 are across and 14 are down.