This crossword No. 10583 clues and answers were published on Wed 07 Apr 2004 and the puzzle can be visited by following The Guardian Quick Crossword No. 10583 link.
All Across Clues and Answers:
1-across – Highly confidential : TOPSECRET
8-across – Sort of boot, hammer, pot or tar : JACK
9-across – Washerwoman : LAUNDRESS
10-across – Busy : ATIT
13-across – John, first BBC Director-General, 1927-38 : REITH
15-across – Involuntary movement : REFLEX
16-across – Highest point : ZENITH
17-across – British government of India, 1858-1947 : THERAJ
19-across – Egg dish : QUICHE
20-across – : PINUP
21-across – Detest : HATE
24-across – 1415 battle in the Pas-de-Calais : AGINCOURT
25-across – Acidic : TART
26-across – 8 cut it down : BEANSTALK
All Down Clues and Answers:
2-down – London cricket ground : OVAL
3-down – Indispensable condition : SINE
4-down – Outer layer of organ, such as the brain : CORTEX
5-down – Substitute – cheap : ERSATZ
6-down – : LASTDITCH
7-down – Vaguer in outline – stick here : SKETCHIER
11-down – Short-tempered : CROTCHETY
12-down – Money collected during church service : OFFERTORY
13-down – Summarise : RECAP
14-down – Agitated : HETUP
18-down – Catchy tune in advert : JINGLE
19-down – See 3 : QUANON
22-down – Habit : WONT
23-down – By mouth : ORAL
This crossword has in total 28 where 14 are across and 14 are down.