Cryptic crossword

ACROSS

1. Graduate standing at side of infant (4) 3. Dejected because fewer actors employed? (4,4) 8. Number causing 1 to go for nothing in 7 (4) 9. Promise unpleasant things to a number after earthquake (8)

11. Unofficially not on disc (3,3,6)

13. Furniture put down on golfer’s starting-point (6)

14. Dog made meal of clergyman! (6)

17. Nothing is extreme at the coldest possible point (8,4)

20. Sketches types of goods no longer kept? (8)

21. Resounding noise from the harbour barrier (4)

22. Observe article boiling (8)

23. The equal of a nobleman (4)

DOWN

1. Prohibit floor support for musician (8)

2. Fine bet brings profit (7) 4. Wood and mineral taken to land (6)

5. Broken catches due to the one in the dock (3,7) 6. Animal put in boot terrified (5)

7. New leader has single follower? Less than that! (4)

10. Does it give a shine to footwear from Warsaw (4,6)

12. Concerning earlier progressive politician (8)

15. Wrongly name a single flower (7)

16. Vessel in which the creature ended up (6)

18. Graduate needs article for a swim (5)

19. Fiddlesticks at the front? (4)