Eight unclued lights (two of two words) advise solvers ‘3D 38A is 9D, 32D 32D-17A, when 6A 44A 31D’.

Across

1 Don’t at first knock small amount of liquid (Scotch) (4)

12   Last, as do picture capture and future exposure (6)

13   What’s in deadly new compound (8)

14   Burn short jacket (5)

15   Judge almost misrepresents village’s case (7)

18   Off-and-on, His self-ease dwells in Man, say (5)

19   Camp male holds note (6)

20   Yeats is beginning to study complex sort of writer (8)

21   Anxious, sons taking lead in cushy job (8)

25   Legally levied estate, half of which in red? (9)

27   Overcharge copper and chief...