Across

1: Handle collision from rear (4)

4: Active ends of cheapish vinyl hose placed in attic (8)

8: Neon light one move from city (7)

11: Country half confused sir (3)

12: Capital distributed behind rug (9)

14: Mark insect sound (4)

15: Twang air conditioning with coin (6)

16: Pull back intestine (3)

19: Sodium Hydride - no thanks! (3)

20: Licensed aeroplane adapted nightly service (10,7)

21: Regular bureau supporter (3)

22: Weather container (4)

23: Cow, mostly feeble, looking west (4)

25: Divine marsupial starts dancing - it's subordinate to Westminster (8)

26: Encloded Canadian diploma (5)

27: Idea on the horizon (7)

29: Flirt then perish - a rollercoaster! (6)

31: Party snoop avoiding nothing (3)

32: Average election's pests (6)

33: They're off the west coast - husbands, perhaps? (8)

Down

1: Skirt sides of khaki lifeboat (4)

2: Fantasy isle's american hospital found in Burger King (4)

3: Quickly looking at near miss (8)

5: Plant's highly scented tops distributed in mister, perhaps? (7)

6: Throw limitless earth (3)

7: Pitch brown fabric (6)

9: Holy man melted tennis award (5,6)

10: Avoided sigh in conversation, guided after learner (9)

11: [theme] (8)

13: Hits ground, drugged, before mountains (9)

15: Assistant starts doing everything under copilot, perhaps (4)

17: Homosexual slobber? Sounds Celtic (6)

18: Follow after odd sector operator (8)

21: Droning annoyances grab apple seed above Spanish domain (8)

23: District branch eating union (7)

24: Indefinitely, alternatively, in heat (7)

25: Spin, screw soldier - it's banned in America (6)

28: Clothing found circulating in alligator (4)

30: Activated and depleted (4)