1 ROVE (4,4)
9 Sieve had become sticky (8)
10 The French female in command is not clerical (4)
11 SHORE (5-7)
13 Island train did come off the rails (8)
15 Counter work by model (6)
16 (E) (4)
17 MISTRUST (5)
18 Ben returned with Rex from industrial Germany (4)
20 It will not pass the acid test (6)
21 Costume for all musicians together (8)
23 ROELAS (4,2,6)
26 Tall leaves producer (4)
27 Squirming adder trapped Peter, colourful beast (3,5)
28 Elementary light? (4,4)