Cryptic crossword No 2,881

Across

1. Believer quotes Upanishad and keeps everyone religious to begin with (6)
2. Loveless Doug, jaded criminal, declared "it's the truth" (8)
3. Exercise high hopes before wife's seedy performance (4,4)
4. Hours and seconds by which horses are gauged (5)
5. Cricket team let outside of current hotel (9)
6. Keep parking amid dismal deluge (8)
7. A French woman in old garden at noon becomes erratic (6)
8. Maybe Daisy touches Nick's face at the back of ship (6)
9. Warder in London drops bit of food for bird (3-5)
10. Ordinary man with alien garment (6)
11. Can fight without the German's flaming kit (9)
12. Half a dozen nurses ring university in Dakota (5)
13. Many papers following special constable's riot (6)
14. Look thus, if battered (6)
15. Flowers grow in the interior of island (6)
16. King initially accursed that writing implement (6)

Down

1. Uniform Prak knocked up for Australian (3)
2. Prodded duke after card game ended early (5)
3. Kids' author regularly has a boring hero test a navy headset (10)
4. Say Lance was victorious, claiming record over American (6)
5. First halves of consecutive months hold charm for West African (4)
6. Female replacing husband with manner of a rogue insect (6,3)
7. Old European neurotic about dispatcher? (11)
8. They start toasting Sir feverishly (11)
9. Some hope to go up in this final lift (3,7)
10. Movement intended to bring about fall of Iran created with this? (4,5)
11. Zaphod Beeblebrox's first and fifth pair bring in gross capital (6)
12. Hunter craving to move into the heart of Chad (5)
13. March on Indiana! Sign up! (4)
14. Where weasel secretes a mammal (3)