This crossword No. 12663 clues and answers were published on Fri 10 Dec 2010 and the puzzle can be visited by following The Guardian Quick Crossword No. 12663 link.
All Across Clues and Answers:
1-across – Powerful and wealthy : PLUTOCRATIC
9-across – Spontaneous : IMPULSIVE
10-across – Colour : DYE
11-across – Sizeable : HEFTY
13-across – Big mistake : CLANGER
14-across – Pulpit speech : SERMON
15-across – Declare one’s commitment : AFFIRM
18-across – West London exhibition venue — Washington state capital : OLYMPIA
20-across – Material — or any : RAYON
21-across – Engage in a winter sport : SKI
22-across – Commotion : KERFUFFLE
24-across – Football’s box : PENALTYAREA
All Down Clues and Answers:
2-down – Circuit : LAP
3-down – Hunting cry : TALLYHO
4-down – Drive home : CLINCH
5-down – Entertainments venue : ARENA
6-down – Disgrace : INDIGNITY
7-down – Creamy soup, served chilled : VICHYSSOISE
8-down – Manipulate constituency boundaries : GERRYMANDER
12-down – Old single : FORTYFIVE
16-down – Recipe : FORMULA
17-down – Bird : PARROT
19-down – High-class — permanent : PUKKA
23-down – Exclamation of mock dismay : FIE
This crossword has in total 24 where 12 are across and 12 are down.