This crossword No. 13797 clues and answers were published on Tue 29 Jul 2014 and the puzzle can be visited by following The Guardian Quick Crossword No. 13797 link.
All Across Clues and Answers:
1-across – Utter obscenities : EFFANDBLIND
9-across – Serious student of flying saucers? : UFOLOGIST
10-across – Evil rival : FOE
11-across – Fastidious : PICKY
13-across – Exempt from levies : TAXFREE
14-across – Little one : NIPPER
15-across – Crowd : THRONG
18-across – 1990s’ music : BRITPOP
20-across – Ski slope : PISTE
21-across – Curve : ARC
22-across – Observe two of everything : SEEDOUBLE
24-across – Noisy ghost : POLTERGEIST
All Down Clues and Answers:
2-down – To and __ : FRO
3-down – Follower : ACOLYTE
4-down – Fragile : DAINTY
5-down – Milky sap from certain plants that coagulates on exposure to air : LATEX
6-down – Extremely wicked : NEFARIOUS
7-down – Mexican shrub seed containing a moth larva : JUMPINGBEAN
8-down – Beset by enemy forces : BELEAGUERED
12-down – Free instrumental composition, played with improvisation : CAPRICCIO
16-down – One half of the pelvis : HIPBONE
17-down – Seem : APPEAR
19-down – Put forward : POSIT
23-down – Public transport : BUS
This crossword has in total 24 where 12 are across and 12 are down.