This crossword No. 12514 clues and answers were published on Sat 19 Jun 2010 and the puzzle can be visited by following The Guardian Quick Crossword No. 12514 link.
All Across Clues and Answers:
1-across – Alkali used as fertiliser : POTASH
4-across – Religious body or building : CHURCH
9-across – Addition to a will : CODICIL
10-across – : VIDEO
11-across – : FERAL
12-across – Good quality : VINTAGE
13-across – Thwarted by bad luck : STARCROSSED
18-across – Surgeon’s knife : SCALPEL
20-across – Amber : BREAM
22-across – Commonly : OFTEN
23-across – Hard worker — corrupt operator : GRAFTER
24-across – Infection of the mouth and throat : THRUSH
25-across – Fake : PHONEY
All Down Clues and Answers:
1-down – Appease : PACIFY
2-down – Welsh royal family : TUDOR
3-down – Not concerned with religion : SECULAR
5-down – Refuge : HAVEN
6-down – Spread : RADIATE
7-down – With head and back of the neck covered : HOODED
8-down – Wise guy : CLEVERCLOGS
14-down – Device using sliced bead : TOASTER
15-down – Day of rest : SABBATH
16-down – Accompanying person : ESCORT
17-down – Wise guy : SMARTY
19-down – See 17 : PANTS
21-down – Sir ___ John, singer-songwriter : ELTON
This crossword has in total 26 where 13 are across and 13 are down.