7  Bag of trash joiner removed (6)

 8  Voluntary platoon I organised (8)

 9  Something small in empty cash machine (4)

10 Performed with Spice Girl before party with old instrument (10)

11 Help over cordial form of musical scale (8)

13 Deliver a sermon holding rubber (6)

14 Engineers battle sign for traditionalists (13)

17 Starts to get erotic in seedy hotel with a hostess (6)

19 Liberal poetess loses old saints books (8)

21 Doctor skiing with Cate for winter sport (3-7)

22 Copy of letter in broadcast (4)

23 Tendency to include, say, skin of onion plants (8)

24 Redecorated room with hints of lemon and umber gilding (6)

 2  Country once in Asia Minor (4)

 3  Part of joint holding key ligament (6)

 4  Virgil's continuing in the same way (2,6)

 5  Naming the subject, son carries order through (10)

 6  "Material Girl" leads in abundance (6)

 8  Signs of loyalty in games between Eton and Harrow? (3,6,4)

12 Iron starts to be transformed in electronic device (10)

15 Cheers start of musical number downing one drink (3,5)

16 The class designed school bags (8)

18 Engraves boats but not the prow (6)

20 Digital site that may show growth of corn? (3,3)

22 Setter returns setter's award (4)