Cryptic crossword No 2,729

Across

1. Goodness me, such infernal clangers! (5,5)
2. Idiot singer's third to do a turn (4)
3. Hired men backing one-man band's performance (7)
4. Silly people that might be seen turning calculator upside down (7)
5. Island or large isle at sea (5)
6. Unkindly say book without introduction's in need of rewrite (9)
7. Two legs moving around quietly avoiding this? (8)
8. Pop star I libel annoyed about fake news? Just a bit (6,6)
9. See 18
10. With feet on the ground, he muddled along with losses (8)
11. Perhaps wedges and smelly fish introduced by hotel (4,5)
12. Conversation starter that bloke will duck (5)
13. Gives advantage to some participants in doubles session (7)
14. Frozen food in lounge goes out of date (7)
15. Sparks' latest record is hard work (4)
16. Second-rate student with awful big shoes to fill is on thin ice? (10)

Down

1. Tips from hardy individual with lamp raising current health standards (7)
2. Proper bit of flagellation's upsetting (5)
3. Hawks in parts of monastery possibly made out (5)
4. Cover's ridiculous headlines leaving no room for article (8)
5. Every so often, solver brawls over brand names (6)
6. Either end of Jedi master's belt (3)
7. Topless crowd reportedly witnessed foul (7)
8. Sort of milk which Methuselah enjoyed (4-4)
9. Rubbish government engaged in black humour (5)
10. Prison uniform left in block (5)
11. Pair of presidents giving up British for hot secret (4-4)
12. National emblems not that prevalent until Middle Ages, ultimately (8)
13. Young Greeks wept endlessly over timeless city of theirs (7)
14. Married couples regularly RSVP to functions (7)
15. Becoming bricked in, revolutionary saint surrenders (4,2)
16. Split seconds from whistle, jammy player overturned lead (5)
17. Making quick getaway, dodging fine for dishonesty (5)
18. Self Esteem's almost completed prestigious set of awards (3)