Cryptic crossword

ACROSS

1. I’m turning with great potential as I fly south (7) 5. Bar of metal, fifty per cent gold in tin mixture (5) 8. Depending on rail, net can be adjusted (7) 9. Short pair about to copy thesis material (5) 10. Get it at entry in the tomb and sink down (9) 12. What is cast will go on no longer (3)

13. It is stretched tight in the time a verb takes (5) 17. Rocky height is a tip of such rubbish (3)

19. Is this the correct change of direction? (5,4) 21. Sit around in Virginia for sake of the view (5) 22. Have a tendency towards it being a gradient (7) 24. Stops the bleeding flower-holders (5)

25. Said hello with tears in the North (7)

DOWN

1. Right game one sorted out, it not being actually there (6) 2. David’s opponent hit goal somehow (7)

3. In a prescription, throughout two articles (3) 4. Something more wide is an example of it (5)

5. Give effect to a piece of equipment (9)

6. With space between, need half have looked open-mouthed? (5)

7. The thing jolly Jack will acquire to aim at (6) 11. Differences in pitch in the times when music isn’t played (9) 14. He may be doing the rounds for pleasure (7)

15. Quietly wanders far and wide and shows it to be so (6) 16. At home one may incline to mean it (6)

18. Faculty of discernment with which to try food (5)

20. What the racecourse is like in the act of departure (5) 23. Are, we are told, to follow this starting signal (3)