1 Glass panel that can only be seen through from one side (3-3,6)
2 Duty (6)
3 Bait (5)
4 Offence (7)
5 Issues (8)
6 Coffin frames (5)
7 Swellings (6)
8 Inexpensive lodging (5,7)
9 Someone who delivers ice (6)
11 Heavy metal (4)
16 Figure of speech (8)
19 Material worn under collar (7)
20 Compound that has different forms but the same composition (6)
22 Street (6)
24 Feudal superiors (6)
25 Northern Brit (4)
26 Daughter of Tantalus, who was turned to stone (5)
28 Symbol of victory (1-4)