This crossword No. 11782 clues and answers were published on Tue 12 Feb 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11782 link.
All Across Clues and Answers:
1-across – Parasite – mark of approval : TICK
3-across – Retreat : WITHDRAW
8-across – Spot at a distance : ESPY
9-across – Terse joke : ONELINER
11-across – Yielding results : PRODUCTIVE
14-across – Long pace : STRIDE
15-across – Disreputable woman : FLOOZY
17-across – Property of radio signal, light, etc : WAVELENGTH
20-across – Turncoat : RENEGADE
21-across – Mausoleum : TOMB
22-across – Romantically naive : DEWYEYED
23-across – Used to be : WERE
All Down Clues and Answers:
1-down – Enter another’s property without permission : TRESPASS
2-down – Closet : CUPBOARD
4-down – Set fire to : IGNITE
5-down – Stroke hitting ball just after it bounces : HALFVOLLEY
6-down – Foul – station : RANK
7-down – Small hard growth on skin : WART
10-down – Rectangular courtyard : QUADRANGLE
12-down – Predatory mammal known for killing snakes : MONGOOSE
13-down – Incidentally : BYTHEBYE
16-down – Travel around selling small items : PEDDLE
18-down – Poke or jab : PROD
19-down – Frozen precipitation : SNOW
This crossword has in total 24 where 12 are across and 12 are down.