Cryptic crossword No 3,480

Across

1. Reservists giving thanks in Yorkshire (2)
2. Expert located far below the surface (8)
3. Correctly align cases with painkillers (10)
4. Joke company came about (4)
5. See 18d
6. Come across like monarch - exceptionally! (10)
7. Punk, perhaps scratching bottom meeting lumberjack and oilman (11)
8. Seed of 3d? (5)
9. Husband sick, might die at this point (4)
10. Frenchman beside Welsh river has strong odour (4)
11. 18d's chagrin reignited on occasion (8)
12. Swingers' bars (5)
13. Often heartless towards (2)
14. Charming lady with scent - she ran amok (11)
15. Vehicle the German reportedly constructed with 18d (10)
16. Pick up dole and get sandwich (4)

Down

1. Orca in a panic, it makes noises (7)
2. A thousand immediately pledged laid bare understanding (9)
3. Actor, female near Spanish town (5)
4. 24a, perhaps blocked by 27a after a stretch (9)
5. Track an extraordinary thing that carries water (4-3)
6. Beheading - fail to take bit off (3)
7. Case of judges locking up old boy for pieces of work (4)
8. Fermented grain is coming up (7)
9. Joey perhaps heading dynasty during nursing practice (7-2)
10. Megastore perhaps stocking Air for example (9)
11. Find us trying to take part after TACO pain clobbered influential businessman (7,2,8)
12. Opposes son engaging in more exams (7)
13. Sadhu, perhaps greeting spirit (5)
14. Something at heart of old English character (3)
15. Pair of druggies' fellowship with grandmother (4)