Across:
   1. Republicans against North country (4)
   3. Job to do after invasion (10)
  10. Remain at sea with region's first sailor (7)
  11. I'm most out of fashion on the block (7)
  12. A bit of investigation established Sara's innocence (14)
  14. Grab student at church (5)
  15. Superficially dull host getting wild praises for spread (9)
  17. In Sartre a sure, reliable fellow to pay the bills (9)
  19. One siesta time not appropriate (5)
  21. Run of cards with jack and eight on the ends, but not the best suit to be in (14)
  24. Let trap run! (7)
  25. Jerusalem for instance not unknown as European territory (7)
  26. The retarded perhaps lead the actor: meet Rush's 27 (10)
  27. Even characters sordid as gambling figures (4)
Down:
   1. Always living without heart is wrong (10)
   2. Almost a month before bed bears fruit (7)
   4. Eric or Ian, deranged, cut plant (9)
   5. Nut is cracked into individual pieces (5)
   6. Ah! Typical label's arranged thus (14)
   7. Soldiers, maybe scent is lost (7)
   8. You should attend to this and make dough, they say (4)
   9. Not keen on authentic sinus trouble (14)
  13. Stupid tale rehashed cliches (10)
  16. Saturn's 27 etc. with her rack perhaps (9)
  18. Right on the money grasping patron's core essence (7)
  20. Tricky prize: taking week's vacation (7)
  22. Angle amethyst to show this? (5)
  23. Ring friend? (4)