1 Directly watches for corruption and attempts to deceive (2,3,4,5)
2 Emperor deprived of gas cutting short river break (7)
3 Climax of competition starts late, remains fast (2,1,5)
4 Code in Latin and this (5)
5 Other side come round having had an idea (9)
6 Air and mud mixture produces 25 (6)
7 "Teas?" said Mark (6)
8 Musician surprisingly rogering a horse (6,8)
14 Distinguishing reportedly awful reviewer (9)
16 Excessive, jewel-encrusted sort of paper (8)
18 Old books featuring church weapon (6)
20 Dull yellow metal round milk producer (7)
21 Carefully enter three notes (and one in German) (4,2)
23 Designer from Georgia's act of secession (5)