Crossword

Across

 1 Slick, as found in ash (6)

 4 What Geoffrey Boycott might like on his fish? (6)

 9 American university colleague, for the most part (7)

10 Arctic expedition companion sees part of boat escape

11 Quiet Italian instrument (5)

12 A means of power for medical man (unknown) found in prison room (3,4)

14 Replace the fine polish on HMS Victory, for instance (4,2,3,4)

16 Something to forget about (7)

18 Object when refusing to leave trifle (5)

20 That man there followed 6? Fine! (5)

22 A pressing time? (4,3)

23 Father (catholic) handed Spanish bundle (6)

24 A wish to camp? (6)