4  Relating to the topic, like 7, 8 and 9d, say (8)

10 Get possession of horse's jointed bit (7)

11 Jugs indeed and drinking vessels holding last of hock (7)

12 Set clue not completely second rate (4)

13 Racket involving immature fashionable doctor's way of posting information (7,3)

15 Dipsomaniac quitting bottles to release from accusation (6)

16 Very special person's sixtieth anniversary? (7)

20 Spot ants endlessly about, essentially, on type of 22 (7)

21 Water heater for old eccentric fellow, it's said (6)

24 Ways to catch jaguars, for example; ones to avoid if you're over 70 (5,5)

26 Select area for international store (4)

28 Under the influence of narcotics, daughter giving appearance of strength (7)

29 One who with effort draws sharp weapon restraining leader of riot (7)

30 Muscles of those who vote, changing sides (8)

31 Some valid car document, one showing who you are (2,4)

 1  Member of band, fellow going round US chemical company (8)

 2  The way things are; attitudes occasionally central to falsified quotas (6,3)

 3  Pope unpolished on the radio ... (4)

 5  ... worthily organised the scriptures (4,4)

 6  Barmen much harassed producing sonic speed (4,6)

 7  President's a good, trusty person some say (5)

 8  About son in old establishment for gambling (6)

 9  Listen with a hint of tact and compassion (5)

14 Cheerful about girth dropping grammes, a privilege (10)

17 Sadly lost again, longing for things past (9)

18 Bullfight not accepted on principally restricted belt of land (8)

19 Hard up and bolshie, negotiated on Wall St (8)

22 Irish patron saint's endless attempt to reconcile seeming incompatibles (6)

23 Digger's home in south-east (5)

25 Italian dictator welcoming European devil (5)

27 Round of applause for worker (4)