SOLUTION TO PRIZE CROSSWORD No 15,807:

ACROSS: 1 Sweet potato. 9 Pollute. 10 Firedog. 11 Net. 12 Excited. 13 Halogen. 14 Run. 15 Recap. 17 Cuppa. 18 Cocoa. 20 Night. 22 Nod. 24 Scourer. 25 Willing. 26 Ash. 27 Arsenal. 28 Invents. 29 Yellow fever. DOWN: 1 Self-consciously. 2 Equator. 3 Trend. 4 Off-the-peg. 5 Acrylic. 6 Old-age pensioner. 7 Appear. 8 Agenda. 16 Contralto. 18 Casual. 19 Adrenal. 21 Tel Aviv. 23 Digest. 25 Whiff.