7  Vessel used with pestle for grinding bonding material (6)

 8  Stretch neck to better see knowing and clever daddy-long-legs (5,3)

 9  Minor issue? Regulation concerning mature years, maybe (3,5)

10 Some nicest uses for an ancient bride's belt (6)

11 Constituent represents an irregular soldier (8)

12 Explosive sex involving umpteen from time to time (6)

13 Lamenting, we hear, leading performer - Venus maybe? (7,4)

18 Medicine man's counterfeit article (6)

20 Reject short walk on treeless upland (4,4)

22 London area primarily set up over revolutionary works (6)

23 Immorality of warped promiscuity, twisted society briefly rejected (8)

24 Justifications of French barriers (8)

25 Culinary herb not initially backed for Asiatic wild ass (6)

 2  Heel's argument about sesame (8)

 3  Turbulent episodes of afternoon engaged in whisky tipples (6)

 4  Effect of drugs turning some mafiosi so cranky (8)

 5  Items discarded from planes over America (6)

 6  Book space for store of food (7)

 8  Nasty centralisation with no right for old way to punish offenders (3-1-4-5)

14 Black medick plant; an extraordinary thing once (8)

15 Civic dignitary planting tree on isle, say (8)

16 Bobby gains height in this? (7)

17 Dreadfully raw test for one who studies hard (7)

19 Male sparrow hawk encountered circling US park finally (6)

21 Predatory bird savaged parrot (6)