1: A grim ball gown, uncomfortable in increasing temperature (6,7)
2: Is Asian holy man sinning in Asian capital? (9)
3: Zoom back from the deeps (5)
4: Drongo lacks even a pet (3)
5: Leaving no trail, Penny and Les hid in the middle of Sussex (9)
6: They occupy the space of many workers (7)
7: Complete western part of golf course (5)
10: ...near fishing boats stocked with cold bait (5,8)
14: One fowl and yet two foul (9)
15: Shock with exclamations while mounting horse (9)
17: Refuse to reveal how old clothes are (7)
19: Outspoken one-time Houston gridiron pro and mathematician (5)
20: Water plants used in informal Gaelic gardens (5)
22: However, you expect trouble at first (3)