This crossword No. 10070 clues and answers were published on Tue 13 Aug 2002 and the puzzle can be visited by following The Guardian Quick Crossword No. 10070 link.
All Across Clues and Answers:
1-across – Native of Copenhagen, for instance : DANE
3-across – Polluted precipitation : ACIDRAIN
8-across – Villein : SERF
9-across – Corduroys or chinos : TROUSERS
11-across – Practice sessions : REHEARSALS
14-across – London Underground line represented in yellow : CIRCLE
15-across – Downing of tools : STRIKE
17-across – Fellow school pals : CLASSMATES
20-across – Criminal : UNLAWFUL
21-across – Operatic song : ARIA
22-across – London Underground line represented in brown : BAKERLOO
23-across – Fish – grouse : CARP
All Down Clues and Answers:
1-down – London Underground line represented in green : DISTRICT
2-down – London Underground line represented in black : NORTHERN
4-down – Cherry red : CERISE
5-down – Two beats to the bar : DOUBLETIME
6-down – Pinnacle : APEX
7-down – Food : NOSH
10-down – Person waiting in vain to be asked to dance : WALLFLOWER
12-down – London Underground line represented in light blue : VICTORIA
13-down – Instrument played between the teeth : JEWSHARP
16-down – Sham : PSEUDO
18-down – Unfeeling : NUMB
19-down – Unfriendly criticism : FLAK
This crossword has in total 24 where 12 are across and 12 are down.