Cryptic crossword No 3,469

Across

1. Rotten brat appears surprisingly evil from early signs (4)
2. Action when second check captures more than one piece (8)
3. Group dissenting about rule may be vulgar (8)
4. Espied returning male getting diamonds laundered (6)
5. Red shift suggesting this body as supplying astronomical radiation initially (6)
6. Analysis of nameless Genesis text discovered mysteriously (8)
7. Comic - one potentially saving money (8)
8. Godless child gains one exemption from recrimination (8)
9. Entities disturbing nights (6)
10. Refine bill precisely (6)
11. Get sharp edge on axes and cut music producer (9)
12. Computer file transfer dump intermittently lost charge (6)
13. Chilly feeling old American being severe (8)
14. Eager, bringing forward name to procure joint (4)
15. Going by what I've heard journalist pursuing place in bank (9)
16. Accommodated inside defensive structure with a valley to the west (6)

Down

1. Examine temperature within sound every so often to end of May (5)
2. Gear to mortar around crack lacking first bit of chisel (9)
3. Extremely large youth undressed to prepare wall for papering (7)
4. Amazing bird eats tortoise's head (9)
5. Gascon female beneath overturned toilet finding engine housing (7)
6. Clothing worn backwards by leader of Romans as a niche way of communicating (5)
7. Eccentric near mire beginning to dance in 6d (9)
8. Remainder of cable twisted securing article (7)
9. Chap who is pretentious poseur regularly taking drug by day (5)
10. Conflicted announcer tainted at heart (9)
11. Addled cheese found beneath lake drains (7)
12. Renfrew witch's spell will not come apart (7)
13. After being imprisoned briefly embarrassed and hurt (7)
14. Resident of Cape district has ox destroyed (5)