Cryptic crossword

ACROSS

1. Soldier in the nursery? (11) 9. Bill speaking well? (7) 10. Useful quality in the manner laid down (5) 11. Spartan slave emerges from hotel (5) 12. Passage taken straight from pamphlet (7) 13. Sector guard (6) 15. Change of backbone is plan (6) 18. E.g. lanes in Africa (7) 20. Kenneth is to receive the souvenir (5) 22. Public voter (5) 23. Was seen about in this place since (7) 24. Relate empty reforms in moderation (11)

DOWN

2. Fresh fiction (5) 3. He can look down easily on lots of people (7) 4. Almost No 1 amongst ancient cities (6) 5. 6. Still Don’t fermenting about touch since agent sailor a (5) with a blemish (7) 7. Strained atmosphere while flying (4,7) 8. Dignity of ranks in countries (11) 14. Yield on one occasion in three consecutive letters (7) 16. The condition of the sufferer under treatment? (7) 17. Blooming river? (6) 19. Rise to such costume (3-2) 21. Get down to service instruction (5)