Cryptic crossword

ACROSS

1. Place of learning, say, gets in half the collection (7)

6. Underburnt brick is identical to Latin (5)

9. It is nearly the end of August when it falls (5)

10. Changed the datum ET supplied (7)

11. Confess one will let somebody in (5)

12. A growing together at the students’ club (5)

13. An available manner alfresco (4-3)

15. The precentor perhaps ran to choir-leader (6)

16. A brown pigment one could rub me with (5)

18. Solitary person one placed between left and right (5)

20. Evil spirit, drink, some say (5)

21. Residential area in Essex urbanised (5)

22. 26’s child is American icon perhaps (6)

25. Stoker’s creation might laud RAC for him (7)

26. Dutch one talks reprimandingly to one (5)

27. An ugly dwarf may provoke trouble on the internet (5)

28. Make it ready for the allowance of food (7)

29. A final word will perish in gold (5)

30. Morally lower sabre-rattling (5)

31. About time person was put out by the back door (7)

DOWN

1. Pointless remark as to a book of jottings (11)

2. A brood of young may lie untidily about (6)

3. Tax carrier: curl u-turn outside the academic course (5-10)

4. Under bale it is capable of being borne (9)

5. On the other hand it shows a profit (5)

6. What outstanding leaders ensigns may be! (8-7)

7. Tick contents of dump with force of motion (8)

8. Allow one to be a landlord (3)

14. Gorge for a thousand pounds? Is able to, there (5,6)

17. Cattle gathered for corralling brought to the next ten above (7,2)

19. Loathsome to USA, no use is made of it (8)

23. Merciful as a fellow appears in colour (6)

24. Sort of share issue in half sacred writings (5)

27. Bat, as it is picked up by one who pays the bill (3)