3  On the face of it is a mark, surprisingly clean (2,1,6)

 7  Information moving fast overcoming speed of light (5)

 8  If only rum could be used similarly (9)

 9  Smooth from one end to another, the Welsh wear them (5)

10 Shiraz, say, read aloud recorded complaint (3,4)

13 What remains is former form of art (5)

14 Left fight after the first match (5)

16 Satyagraha - it is inherent to this country (5)

17 Revolutionary in almost all my efforts to transform ordinary into extraordinary (7)

21 Beast with one horn perhaps (5)

22 They get cracking for a new life! (9)

23 Country dance in which a ring is exchanged (5)

24 Gray / Gray Black resulting in an argument (4-5)

 2  In the circumstances, humanists could become this (9) (9)

 3  The same old story - Asus dual driver first needs to be extracted (2,5)

 4  Suppressing affection within is a mistake (5)

 5  Indicator of Cockney's torment (5)

 6  It's a waste tract officer, no going back (5)

10 GRUBBY-B)*, anagrind=rough, boy=B, def=the gameGrubby rough boy taken out for the game (5)

11 Hot pasty in foil tins? Silly (9)

12 Backless dress with very short cloak not exactly explicit? On the contrary! (9)

15 Longing for a drink? Try this cocktail (7)

18 Not the last to entertain, served up drink (5)

19 Dark-skinned date is taken for hot dog (5)

20 Spooner singing 'Gee Ma' for the press (5)