1 down. Territorials. 7 letters.
2 down. Veil. 7 letters.
3 down. Sweeten the pot. 2 letters, 3 letters and 4 letters.
4 down. Squash – petrol. 5 letters.
5 down. Feverish. 7 letters.
6 down. Aid oik (anag.) – Japanese martial art. 6 letters.
11 down. Tailpiece of cooked chicken – pontiff’s hooter? 5 letters and 4 letters.
13 down. Chest bone. 7 letters.
14 down. Midwestern US state. 7 letters.
15 down. Civilian escaping dangerous place. 7 letters.
16 down. Tacky. 6 letters.
18 down. Quick. 5 letters.