Cryptic crossword No 1,677

Across

1. Financially speaking, New York Times maintains volunteers pursue progress in real growth obligations (7,5,3)
2. I leave ablative construction where additions are relevant (7)
3. Layer of dust lying on every single surface originally (5)
4. Sort of leave to order dinner in silence (9)
5. Not quite heart of priceless cool (3)
6. Stand in shelter when round back (5)
7. Old country dancing - rumba? (5)
8. See 1
9. See 31
10. 13 or 15 can make bum gyrate (5,4)
11. Place to call robot? (5)
12. Remove lesson caught from PO nemesis mostly (5)
13. Quote other 24 sense (5)
14. Had too much rum (3)
15. Caused difficulty to depend on paper not entirely kosher (9)
16. 49 in French water colour (5)
17. Ted's back with a new charge (7)
18. Queen twice avoids clients and drills those focused on duty (7,3,6)

Down

1. Hold on to the Italian on the line (7)
2. Ahead of soft waxing combination (9)
3. Lawrence pursues volunteers' discernment (5)
4. Make act dead on , say, half of Cyprus? (9)
5. Quickly got about tail-end on UDA stance (5)
6. Confine Eastern Echoes to drawer (3)
7. Butler climbed on scripture; Wilde rose on reputation (5)
8. Mark of English party (7)
9. Packed plot about old times (5)
10. Send up drill application (5)
11. Like populist played up to head off rationality (9)
12. Setter's spirit keeps up-turn left in confusion (9)
13. Child's hero concerned with a singer (7)
14. In on way investigators raised charges (7)
15. Let in Bill with German (5)
16. Call of the Seine (5)
17. Count's rings (5)
18. See 1a