Alternate clues: ACROSS 1. Sister show to 'Holby City' (8) 6. Teacher's flock (6) 9. So many sheep! (6) 10. For auld ____ ____ my jo, for auld ____ ____ (4, 4) 11. A reversal of position (9) 13. For example, Beelzebub (5) 15. Zero expectation of success (2, 4) 17. Barter (6) 18. Exchanges (5) 19. Like a griffin, or sphinx (6) 21. Encounters (5) 22. Two things that are fundamentally different from one another (9) 25. Irritable (8) 26. 2nd Prize (6) DOWN 2. Everything (3) 3. Brother's sister's mother's father's son (5) 4. Painting by Da Vinci, The ____ ______ (4, 6) 5. Colour of Spot, the dog (6) 6. Holds against ground (4) 7. Sits beside driver (9) 8. Way past scheduled arrival time (4, 7) 12. Yet (11) 14. Go gently! (4, 4, 2) 16. Treated with gaviscon (9) 20. Director of "The 40-year old virgin", Judd ______ (6) 23. Sat around (5) 24. Served on tuesday? (4) 27. A non-specific period of time (3)