1 across. Gulp (from the bottle?). 4 letters.
3 across. Representation of stats by box height. 3 letters and 5 letters.
8 across. Dodgy. 4 letters.
9 across. Soldier quickly attacking enemy areas. 8 letters.
11 across. Go too soon. 4 letters, 3 letters and 3 letters.
14 across. Irritable in old age – like bread? 6 letters.
15 across. Essence. 6 letters.
17 across. Finally (with some relief). 2 letters, 4 letters and 4 letters.
20 across. Set of bell tower’s bells. 8 letters.
21 across. Pound coins and tenners etc. 4 letters.
22 across. Collaboration. 8 letters.
23 across. Gusto – piquancy. 4 letters.