Cryptic crossword No 3,949

Across

1. Couple wearing top from wardrobe with woolly areas of fabric easy to clean (4-3-4)
2. Notice school maybe backing that guy, the principal (4,7)
3. Collection of files possibly from lawyer with tense cases - shock! (4,3)
4. Element of incomplete assumption is bananas (9)
5. Cushioning for furniture piece goes here in supply regularly (10)
6. 1 x 2(n) as a single unit (2,3)
7. A primarily rude official lost time taking cocaine and joint (9)
8. Anti-cop in a way (7)
9. Overheard interview for certain swimmer (7)
10. Greeting visitor making posh entrance to house most excessive (7)
11. Run after judge (5)
12. Be aware of fashionable king changing places (4)
13. State how I like my order? (4)
14. CSI arguing about finding white powder (5,5)

Down

1. One in church often investigates essential character of pastors (6)
2. State speed on LAPD radar piece (5)
3. First sign of alcoholic not finishing mix of Italian alcohol (4)
4. Sought-after, e.g., no loneliness harboured, upset not any more (2,6)
5. They're chucking her worst soup (8)
6. Dealing with last portions of pasta salad with vinegary sauce (10)
7. Curious underwater animal excreting a bit of urine with opening of gills (9)
8. Law breaking muffled cocks passing drug with one bit of crystal (6)
9. Reported well-regulated school in the past (6)
10. Get even tungsten sheet, tilt roughly (6,4)
11. Regularly seeing Eternal City region (5)
12. Issue when history class starts? (9)
13. Dome roof of Roman church supporting piece of art (4)
14. Audacity to hatch up manoeuvres winning prizes essentially (8)
15. Chuckling butcher initially chopped... (8)
16. ...cut of pig - no reindeer cut! (6)