Cryptic crossword No 929

Across

1. Creator of 19's sheltering steed if injured (for a 27) (6,7)
2. Curse a sword with six semicircular petals (8)
3. Egg on leader against hesitation (4)
4. King and knight produce a loud wailing noise (5)
5. Periods of shock, say (4)
6. Rewriting eastern news, with first half going west (7)
7. "Pleasant in Isles of Scilly?" Diana holds back (7)
8. See 33
9. Conductor of me and you and that woman (5)
10. Appears in a 27 with 8 - left pound in island with Old Man (5)
11. See 5d
12. Hill sheep rebel against a small quantity being docked (7)
13. Badmouth revolutionary guile by Italian leader (7)
14. What kings followed thing I saw three of? They could go far (9)
15. See 29
16. Frisk a bird (4)
17. 27 acknowledge song is rock (4,4,9)
18. See 5d

Down

1. Giant slayer's dead greedy (5)
2. Corporal's so romantic, taking out Ron (7)
3. Lack of difficulty is as seen, confusingly (8)
4. Rushing around King, the Greek goddess left marvellous gladness for a 27 (4,3,6,6,4)
5. Spot marker and a jolly uniform location for poetic palace (6)
6. See 1a
7. John drops spin, appears in a 27 with 20 (3)
8. The perfect way for me to play cards? (5)
9. Yes, chat about craft (5)
10. Era caught in rising expectation (5)
11. A Christmas saint removed defective personal magnetism (8)
12. Pried all the time, going into predecessor of Zeppelin (7)
13. Warning - Spooner's escaped haze (3,4)
14. I 'as toff over a small tree (6)
15. She's the motor lubricant, not I! (5)
16. See 5
17. Company backing anything from Yorkshire (3)