Cryptic crossword No 3,574

Across

1. ...headless horse: bound to be working for securities! (9)
2. Gangster without a name: "Fingers"? (5)
3. Regularly taking sickie, a jerk has a nerve! (7)
4. I cut canes used for painting technique (9)
5. Arab's stable, I hear, houses first... (7)
6. Way to describe Sonny, a groover? (7)
7. Ages after wolf, birds appear (7)
8. Expand most of scheme, not initially critical (9)
9. South American natives reversing without a rear light (5)
10. Twiggy greeted day regularly (5)
11. Wealthy English slander university cardinal (9)
12. Most sportsmanlike person seen in mirror? (7)
13. Pen Frenchman might turn into plastic? (7)
14. Extreme content of awful traditions (5)

Down

1. Topless gimp flushes silly swimmers (10)
2. Setter's blunders cover up memory of equal values being demonstrated (8)
3. A futon broken and spread apart (3,3)
4. Communism leader's uprising over trees? (4)
5. Witness half of voyage: eureka! (6)
6. Regular area custom Republican dropped for Boston's Primary (8)
7. Records Chile's corn production (10)
8. Hose clip (4)
9. Very high fog? (4)
10. For setback, I reduce bill first (8)
11. King of France on way south for parties (6)
12. In Scotland, wasted and worn (4)
13. Coppers arresting guide for bias (10)
14. Finance code violated without a conviction (10)
15. Workers given lime cocktail for illnesses (8)
16. Note multiple dry covers giving relief (6)