This crossword No. 10496 clues and answers were published on Sat 27 Dec 2003 and the puzzle can be visited by following The Guardian Quick Crossword No. 10496 link.
All Across Clues and Answers:
1-across – Likely to steal : LIGHTFINGERED
8-across – Second-hand : USED
9-across – Supply water to fields etc : IRRIGATE
10-across – Stilton or Roquefort, for example : BLUECHEESE
12-across – Drop in : STOPBY
14-across – Steering device : RUDDER
15-across – Conservatory – military detention centre : GLASSHOUSE
19-across – Exhaustive : DETAILED
20-across – Be unsuccessful : FAIL
21-across – Cowardly : YELLOWBELLIED
All Down Clues and Answers:
2-down – Lag : INSULATE
3-down – Bushy barrier : HEDGE
4-down – Frivolous – irresponsible : FLIGHTY
5-down – Tend : NURSE
6-down – Highbrow : EGGHEAD
7-down – Devours – food : EATS
11-down – Sweat : PERSPIRE
13-down – Long plait : PIGTAIL
14-down – Remains : RESIDUE
16-down – Permit : ALLOW
17-down – Edible internal organs : OFFAL
18-down – Nothing more than – water : MERE
This crossword has in total 22 where 10 are across and 12 are down.