This crossword No. 11561 clues and answers were published on Mon 28 May 2007 and the puzzle can be visited by following The Guardian Quick Crossword No. 11561 link.
All Across Clues and Answers:
1-across – Shaft for loading or cleaning gun : RAMROD
4-across – Sung by a band of singers : CHORAL
9-across – Japanese martial art : JUJITSU
10-across – Vigorous : LUSTY
11-across – Item of bric-a-brac : CURIO
12-across – Subject to levy : TAXABLE
13-across – Principal actress : LEADINGLADY
18-across – Ban on commerce – mob rage : EMBARGO
20-across – Nearby pub : LOCAL
22-across – Device producing intense light beam : LASER
23-across – Detonate : EXPLODE
24-across – Short-lived spring insect : MAYFLY
25-across – Arrival : ADVENT
All Down Clues and Answers:
1-down – Discard : REJECT
2-down – Officer – of greater importance : MAJOR
3-down – Audibly : OUTLOUD
5-down – Spiral : HELIX
6-down – Immature ornamental flower : ROSEBUD
7-down – Non-professionals : LAYMEN
8-down – Detained with conversation : BUTTONHOLED
14-down – Residence of foreign diplomatic representative : EMBASSY
15-down – Leaf of flowering aquatic plant : LILYPAD
16-down – Fine parchment : VELLUM
17-down – Customer : CLIENT
19-down – Bucolic : RURAL
21-down – Hag : CRONE
This crossword has in total 26 where 13 are across and 13 are down.