This crossword No. 12330 clues and answers were published on Sat 14 Nov 2009 and the puzzle can be visited by following The Guardian Quick Crossword No. 12330 link.
All Across Clues and Answers:
5-across – Scowl : DIRTYLOOK
8-across – Make a forceful impression : COME
9-across – See 8 : ONSTRONG
10-across – Lounge : SPRAWL
11-across – Bad-tempered : TETCHY
13-across – Aim for : ASPIRE
15-across – Hot ionised gas : PLASMA
16-across – Error revealing an unconscious thought : FREUDIAN
18-across – See 16 : SLIP
19-across – Get behind : BENIGHTED
All Down Clues and Answers:
1-down – Intelligentsia : LITERATI
2-down – Constitutional : STROLL
3-down – Small cupboard or recess : CLOSET
4-down – Fly high : SOAR
6-down – Self-possession : COMPOSURE
7-down – On its way by post : INTHEMAIL
12-down – Relocate : TRANSFER
14-down – Cure-all : ELIXIR
15-down – South American cloak : PONCHO
17-down – Drug addict : USER
This crossword has in total 20 where 10 are across and 10 are down.