Cryptic crossword

ACROSS

1. Party of about fifty is perhaps not worth considering (6)

4. They weigh the thin plates of fish (6)

9. Fiction more can turn to (7)

10. Dispose of the modus operandi young dog uses (3,2)

11. Running wild, a donkey loses its tail (4)

12. The autumnal collapse (4)

13. There’s a bit of corn in the arrangement (3)

15. Looks trim without water being added to it (4)

16. Record is kept in Washington location (4)

19. Occult knowledge of painting (3)

21. It occurs to one if a die is cast (4)

22. A favour that’s not to be heard of (4)

24. To hit him on the head can make a man a king (5)

25. Small Italian wind instrument (7)

26. Cee for communication, perhaps (6)

27. Perhaps dreads their bite, which is venomous (6)

DOWN

1. It is essentially a piece of apparel doctor can’t make up (4,3,6)

2. Satirise one man playing polo? (7)

3. The circle is squared where boxing is concerned (4)

5. Grumble about policeman abandoned by the East (8)

6. A failure in memory shows up in one’s pals (5)

7. Believing in omens, use spirits out of order (13)

8. Gong gets first diners in to their repast (5)

14. Solitaire may be got with willingness to wait (8)

17. Organist’s key-desk may bring one some comfort (7)

18. The pace of piece will rise: use delaying tactics (5)

20. Tutor may turn into interfering old woman (5)

23. Drug partly eradicated as it turns up (4)