Cryptic crossword

ACROSS

7. Brood left for right recital by one in the family (5,8)

8. Go round the bend, set on change vital to construction (6,5) 12. Claim everything, say, will start to expand (6)

14. Hollow laugh? No – but it may come with a smile (6) 16. Dear little fellow, Little Bear, embracing the girl (6) 18. Non-u queues forming at Lyceum opening, and this follows (6)

19. He oppresses his staff, having worked hard on the Thames (5,6)

23. He can’t be found to impress, nosing about (7,6)

DOWN

1. Don’t quite veto this combination of nations (4) 2. Work over the gold if hard up (4)

3. Furnace refuse used in building what blows (6) 4. Went in to fight the enemy when shut up (6) 5. Fragrant oil to go up and down (4)

6. One given the initial aspiration to make it sharp (4) 9. Fuel supply to lubricate thoroughly (3,4) 10. Trident-bearer turned writer, with a melody (7) 11. Sound simile heard at start of last lap (4) 12. Supreme bridge-builder will put it across (4) 13. Soundly had it in mind it was an antelope (3)

15. Keen resentment starts in rubbishing egotists (3) 17. Fish will almost merge in with the Big Apple (6) 18. Completely removes the cartoons in newspapers (6) 19. Integument, various kinds of which may be revealed (4) 20. Behind the choir it will lose head in fall from faith (4) 21. Make changes on the Virginia railway (4)

22. Cover for turn has nothing in it (4)