This crossword No. 9225 clues and answers were published on Thu 25 Nov 1999 and the puzzle can be visited by following The Guardian Quick Crossword No. 9225 link.
All Across Clues and Answers:
1-across – Automobile built before 1930 : VINTAGECAR
7-across – Border of country : FRONTIER
8-across – Auction – somewhere in Greater Manchester : SALE
9-across – Location : SITE
10-across – Swell by pressure from within : DISTEND
12-across – Provoking disbelief : IMPLAUSIBLE
14-across – Eat : CONSUME
16-across – To-do : FUSS
19-across – Explosive device – belonging to me : MINE
20-across – Kept : RETAINED
21-across – Person sympathetic to a cause : WELLWISHER
All Down Clues and Answers:
1-down – Submicroscopic organism, cause of disease : VIRUS
2-down – Continuous : NONSTOP
3-down – Parched : ARID
4-down – Soonest : EARLIEST
5-down – Advantage : ASSET
6-down – Quick look : GLANCE
11-down – Royal castle in the Grampian : BALMORAL
12-down – Sarcastic : IRONIC
13-down – Bestial : BRUTISH
15-down – Soft, velvety leather : SUEDE
17-down – Absolute – precipitous : SHEER
18-down – Small case for small articles : ETUI
This crossword has in total 23 where 11 are across and 12 are down.