This crossword No. 10309 clues and answers were published on Wed 21 May 2003 and the puzzle can be visited by following The Guardian Quick Crossword No. 10309 link.
All Across Clues and Answers:
1-across – North American creature of folklore : SASQUATCH
8-across – Currently broadcasting : ONAIR
9-across – In possession of : HOLDING
10-across – The larynx : VOICEBOX
11-across – Region : ZONE
13-across – Randomly – at least : ANYHOW
14-across – In flower : ABLOOM
16-across – Sudden attack : RAID
17-across – Feature of an English breakfast : FRIEDEGG
19-across – Summertime Blues Eddie… : COCHRAN
20-across – … number of his Steps to Heaven : THREE
21-across – Give an illustration of : EXEMPLIFY
All Down Clues and Answers:
1-down – Land or building measurer : SURVEYOR
2-down – Train – group of whales : SCHOOL
3-down – Citrus fruit cross : UGLI
4-down – Branch of mathematics : TRIGONOMETRY
5-down – Secret – disorderly : HUGGERMUGGER
6-down – Upstart, moneyed but with poor taste : NOUVEAURICHE
7-down – Close kin – cheap theatre seats : FAMILYCIRCLE
12-down – In a grovelling manner : ABJECTLY
15-down – Southeast Asian sultanate : BRUNEI
18-down – Firm hold : GRIP
This crossword has in total 22 where 12 are across and 10 are down.