Cryptic crossword

ACROSS

1. Practised give-and-take and raced to price it otherwise (12)

8. Finished with company at Ulster (8)

9. Loyal troop-leader on the street in Paris (4)

11. High pressure feature will be conveyed round top of graph (5)

12. Like swallows, they might strain after first mouthful (7)

13. Cheeky youngsters one presents with a degree of pharmacy (4)

15. Spare the French an appearance in the second half (4)

19. It takes almost a month for bed to produce fruit (7)

20. Having a glazed facing led it to getting broken (5)

22. The club element may be used decreasingly (4)

23. Wave's recoil goes beneath and to the West (8)

24. It's very stressful to knave, erring as to crown initially (5-7)

DOWN

2. Improve what's written by people in abbreviated edition (5)

3. Imperceptibly moved in on church to end without a heart (6)

4. Regions of Mars the Spanish could have resettled (6)

5. What sort of engine might it be? Run it, anyhow (7)

6. A thrashing requires wound treatment and soft covering (8-4)

7. The working together of cat-door in commotion one has on (12)

10. How to cook fast, replenishing your starters (3)

14. Room where game is informal indoors (7)

16. It's not the right race for a distinguished airman (3)

17. Pattern of lines most Anzacs employed (6)

18. River, in the Keats version, will barely run (6)

21. Language with quarter which is unconventional as to living (5)