This crossword No. 10430 clues and answers were published on Thu 09 Oct 2003 and the puzzle can be visited by following The Guardian Quick Crossword No. 10430 link.
All Across Clues and Answers:
1-across – Agricultural dwelling : FARM
3-across – In the open air : ALFRESCO
9-across – Neanderthal person : CAVEMAN
10-across – Gemstone : TOPAZ
11-across – Exterior : OUTER
12-across – Insect section : THORAX
14-across – Attachment to one’s mother : UMBILICALCORD
17-across – Jacket : BLAZER
19-across – Balloon – dandy : SWELL
22-across – Tower of London bird : RAVEN
23-across – Encourage to develop : NURTURE
24-across – More lethal : DEADLIER
25-across – Remain – rope : STAY
All Down Clues and Answers:
1-down – Handyman : FACTOTUM
2-down – Short metal fastener : RIVET
4-down – Most extreme members of an organisation : LUNATICFRINGE
5-down – Measure expressed as a proportion : RATIO
6-down – Female singing voice : SOPRANO
7-down – Seep : OOZE
8-down – Without principles : AMORAL
13-down – Extramarital bedroom antics : ADULTERY
15-down – South American country where Che Guevara was killed : BOLIVIA
16-down – Sheen : LUSTRE
18-down – Regional : ZONAL
20-down – Break forth : ERUPT
21-down – Poke : PROD
This crossword has in total 26 where 13 are across and 13 are down.