7  Call for help about characters central to cult – they’re immaterial (5)

 8  Stop awful piano ads (8)

 9  Thrown back, one so-so fish (3)

10 Key character in Athens or other Greek location (6)

11 Fade out after bum note? I won’t notice if I’m this (4-4)

12 Hide 10 thus with force and energy (7)

13 Jolly pleasant (but lacking railway) tourist destination (6)

14 Artificial satellite … and a natural one (7)

16 Dribble at conclusion of kinky bondage (7)

19 Mineral paste surrounding bits of your power supply (6)

21 Paltrow perhaps recast as bothered losing first Austen part (7)

23 Someone who sings about a posh car (8)

24 Language proficiency level is hard (6)

26 Clay later found in mineralisation (3)

27 German euros issued to cover what’s troubling the mind (8)

28 English bit of seaside, south-east; this marks the spot (5)

 2  Way to speak of Arctic roll appreciated by upset canoeist (6)

 3  Work on text of number one back issue (7)

 4  Show tips of crocus and rose growing in the snow (8)

 5  Fish retreat in Borders location perhaps (6)

 6  Talkative detective’s caught my throat part (5,5)

 7  Petition for certain river to be bypassed (3)

12 Fantasies of life with a satyr in circulation? (10)

15 Protest Liberal leader before his troubled break up (8)

17 Contend with new leg joints reportedly in sort of whirl or waltz (8)

18 Graduate with doctor starts to advertise South American school for Muslims (7)

20 Works to remove taint from access course (6)

22 I tried out trimmer (6)

25 It’s half a dozen of the Caesars (3)