This crossword No. 12031 clues and answers were published on Fri 28 Nov 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 12031 link.
All Across Clues and Answers:
1-across – Small amount : MODICUM
8-across – Laurence, actor : OLIVIER
9-across – Room – part of a legislature : CHAMBER
10-across – Confidential matters : SECRETS
11-across – Beau : SWAIN
13-across – Duke : ELLINGTON
15-across – Rot : DECOMPOSE
18-across – Member of vegetable kingdom : PLANT
21-across – Finish school or a relationship : BREAKUP
22-across – In heart : HAIRNET
23-across – Girl’s name, originally Roman : LAVINIA
24-across – Disconcert : NONPLUS
All Down Clues and Answers:
1-down – Phlegm : MUCUS
2-down – Play – excitement : DRAMA
3-down – Superior joinery – PM’s job? : CABINETMAKING
4-down – Small piece : MORSEL
5-down – Wrong idea : MISCONCEPTION
6-down – Noiseless : SILENT
7-down – Place of confinement : PRISON
12-down – Gaping : WIDE
14-down – See 12 : OPEN
15-down – Participate in a desultory manner : DABBLE
16-down – Split apart – stick together : CLEAVE
17-down – One who has lost both parents : ORPHAN
19-down – Cancel : ANNUL
20-down – Roman emperor with arch : TITUS
This crossword has in total 26 where 12 are across and 14 are down.