1: Perfect conviction ends trial (5)
2: This would make me a lord (7)
3: Carelessly let teeth rot completely (2,3,6)
4: 18-across Buyers should check this run around shops (5,5)
5: Take out former pamphlet? (7)
6: Small songbirds destroyed mitt near diamond (7)
7: Metallic element forming excellent electrical connection (4,5)
12: Rejecting crew's work on board, you rest at the stern (8,3)
13: Coach almost made fake conflicting noises (9)
16: A child toils to produce poems (7)
18: Deciphered code in a sea-nymph (7)
19: New Testament stories about gifts (7)
21: Gloomy semi-dull firmament (5)
23: Navigate by terse directions (5)