Cryptic crossword No 3,663

Across

1. Sold that stone off, being out of fashion (3,3)
2. Provocateurs in old French city empty refuges (8)
3. Surgical standards in management code? (9,6)
4. Level? - almost never! (4,3)
5. Naughty Nate is a smoker! (4)
6. Recovery of former Spanish relative in person (10)
7. Examiner to inquire endlessly - is corrupt! (10)
8. Occasionally Troy wins settlement (4)
9. Private investigation gives Chief Executive a bad name (5)
10. Grandee overturns ban, provoking a stink (5)
11. To be, or not to be perhaps, seeking ego in superior position (8)
12. Climbers smuggle in alternative keys (7)
13. Lender solicited buying disaster (8,7)
14. Traveller knocked about roughly, leading to decease (6)

Down

1. Quickly protected (2,1,8)
2. Powerless as well as broken, shell mostly in tatters - gutted! (9)
3. ...describing sound of hedgehog (5)
4. Young wine in France given water, protected from ultraviolet overhead (7)
5. Comedian holding pillboxes, perhaps offering mystery item (7)
6. Arab probably has Gershwin on British quiz show (5)
7. Here in France, setter is over 101! (3)
8. Changed over public transport gone tits up on Aussie pick-up date (11)
9. Damage business game for pioneering explorer (5,4)
10. Still verbally decline to accompany Stanley with noise... (15)
11. Gift dispatched ahead of time? (7)
12. Feel sorry for Herb (3)
13. Ban mid-November's fabled ship (7)