Cryptic crossword No 3,838

Across

1. Sporting footwear with a snappy outfit, both trimmed (5,3)
2. Fishy expression - up to no good (4)
3. Acrostic of "find accommodating receptacle to entomb dead" (6)
4. Antipodean’s vital amber liquid, we hear (4)
5. Ex-PM brewing lager with last vestiges of her late barley  (4,4)
6. Afghans regularly overthrown in epic story (4)
7. Cause of extreme weather faked online (2,4)
8. Play outside transport terminal in Chiswick (4)
9. Born horny? This might calm one down (6)
10. Graduate student briefly put right about Sartre's Nausea (3,2,3)
11. School rebuffed pupil’s denial, employing a process for detecting plagiarism (10)
12. Owner's organised report about dog permit oddly ignored (10)
13. Don't take part in operation against ticket seller (3,3)
14. Maybe Simon and Garfunkel's Sound of Silence toasted thus?  (3-5)
15. "Poorly managed reef, greater action necessary" - Kenyan oceanologist taking sides (6,4)
16. Succeed in quiz about cancelled or difficult subjects (4,6)

Down

1. It's clear from the outset - girls love anagrams and silly spoonerisms... (5)
2. Snooker player Hendry’s last cup, perhaps (7)
3. ...like mine (3)
4. Macabre effect of 22d 13ac is as yet unknown  (7,2,2,4)
5. Bird chewed a pencil (7)
6. Post Office is working to shut up malicious writer (6,3)
7. Unusually fine story that’s hard to describe  (9)
8. London and SE might be OK, somehow (3,3,5)
9. Hunter concealed in middle of ox-bow lake (3)
10. Hemp wound up counterpart with tackle on the right wing (5)
11. How walks up Kilimanjaro and fun runs are backed, or by whom? (7)
12. Boundless energy from a cat with one special ability - absorbing carbon!  (6,5)
13. Welsh dish provided in bloody small portion (7)