5  An objection to neighbour (4)

 8  Spooner's to throw cereal at warships (8)

 9  Stalk found in waste material (4)

11 Passage I'll read out on the radio (5)

12 Political extremists departed - that is so at the outset (7)

13 Mythical beast to become boring? (6)

15 National hero - one of six rulers (6)

18 Cockney orders burial in the meantime (7)

19 Simon Templar isn't commonly found after supper begins (5)

21 Final stand for a shoemaker (4)

22 Devil-may-care dog (8)

23 Ladies group initially not getting to fly (4)

24 Flower found when Henry captures insurgent (8)

 1  Obtuse angle - North Dakota is actually in the UK (7)

 2  Expresses gratitude when these containers are filled with hydrogen (5)

 3  It's perfectly legal at a higher level than the directors (5,5)

 4  Farm animals could be heard when broadcast (6)

 6  More crazy graduate abstainer - that's right (7)

 7  I'm set up for news source (5)

10 Dessert to possess a pleasant aroma we hope! (10)

14 Craftsman stalwart is a nomad at heart (7)

16 Captivate the women at church after finally meeting Jolson (7)

17 Antelope unfortunately docked after I'm quiet (6)

18 Relation by marriage in legal requirement (2-3)

20 I dig out organic compound (5)