Across:
   1. Country gig (5)
   4. Environmentalists criticise economist (9)
   9. Those that commit violence towards children (9)
  10. Town's flame bearers (5)
  11. Crop (it's cultivated in warm regions) (7)
  12. Rush off after seizures return with severity (7)
  14. Follow men with petition to remove major (5)
  15. Bonus to have ports in remote locations (9)
  18. see 6,26
  20. Not flush with conceit (5)
  22. Stop in remote location (7)
  24. Exotic mink coat for angry God in 1 across? (7)
  25. Time to muse (5)
  27. Crop (a line cultivated in China) (9)
  28. Ned sneaks about, lacking cover (9)
  29. They may be paid by putting pound in special slot (5)
Down:
   1. Most comfortable in ghetto, as ties thorough (9)
   2. Sat in on altered states (7)
   3. Mr Roach accepting quiet delay with love for 1 across perhaps (11)
   4. Mostly one visiting crepuscular animal as might be got with a shot in the dark (9)
   5. Once sea calms, the boss finally relaxes (5)
   6,18ac. Mark found in this team's tent (3 9)
   7,22. Somewhere many still fish and still drink? (7 5)
   8. Unpleasant in a stylish part (5)
  13. She won't stand for parties! (11)
  16. Fringe elements on strike (no established leader backing such industrial actions) (9)
  17. Wrong side had fellows initially taking some deposits (9)
  19. Hitch, rent, bask, etc. (7)
  21. Bold lad, original and eccentric (7)
  22. see 7
  23. Crow's nest? (5)
  26,18ac. Job involving books (3 9)