Cryptic crossword No 3,899

Across

1. Chosen head to move to right primarily running news desk (7)
2. Chortled oddly then exposed grief for select few (7)
3. Nice bat misplaced in cupboard (7)
4. Dilettante American friend starts to utter rodomontade (7)
5. Daring to go topless in front of swimmers with out-of-date attitudes (3,6)
6. After relinquishing river during truce, squad building bridges (9)
7. Offhand Conservative leaving old partner assumed no interest in Congress (7)
8. Original architect is stick-in-the mud (7)
9. Coupling at home repeatedly welcomed by nudge (7)
10. Group intriguing sailors in San Francisco perhaps (5)
11. Wastes humour on her son (7)
12. Reasonable bloke restricting MDMA (5)
13. Stout aunt's shuffled to church (7)
14. Feline appearing in lace kilt a comedy in retrospect (7)

Down

1. Eccentric beginning to work or die in distress (6)
2. Size of paper company goes up: no tax returns (6)
3. Abandon king to be eaten by bear (6)
4. Open bank has female at head (4)
5. Ape-men struggling with each zip (10)
6. After both were beheaded feasted with King James? I can't swallow that (8)
7. Plot points in really fine film (8)
8. Accidentally losing count gets confused covering European couples' sport (3,5)
9. Surprises more than one young actress with tango preceding a bit of lechery (8)
10. Rabbie's darling's comfortable embracing bare Celt in merry fashion (8)
11. Small scratch carrying off Jesse James? (8)
12. Becoming sexual enthusiast eager man lowers Y-fronts at outset (6)
13. Exclusive set of botanic liqueurs (6)
14. Toilets periodically lacking fastenings (4)
15. Drunk doctor faces doubt (10)
16. Bill holding up male relative for the most part naked (6)