This crossword No. 600 clues and answers were published on Sun 18 Mar 2007 and the puzzle can be visited by following The Guardian Speedy Crossword No. 600 link.
All Across Clues and Answers:
5-across – Attend : PAYHEEDTO
8-across – Dour, forbidding : GRIM
9-across – Put name forward : NOMINATE
10-across – In short supply : SCARCE
11-across – Australian strait : TASMAN
13-across – Rotten; muddled : ADDLED
15-across – Wine bottle : CARAFE
16-across – Unofficial, relaxed : INFORMAL
18-across – Writing table : DESK
19-across – Feeling : SENTIMENT
All Down Clues and Answers:
1-down – Scottish royal residence : BALMORAL
2-down – Alter : CHANGE
3-down – Anchorite : HERMIT
4-down – Knock senseless : STUN
6-down – Previous instance : PRECEDENT
7-down – Fixed, unyielding : STEADFAST
12-down – Loud and grating : STRIDENT
14-down – Reduce in rank : DEMOTE
15-down – Newspaper division : COLUMN
17-down – Submit to authority : OBEY
This crossword has in total 20 where 10 are across and 10 are down.