Cryptic crossword No 3,943

Across

1. Naughty bad ‘un takes sweetheart to river (6)
2. Beginnings of aerial railway cross heathland to bridge (4)
3. Small ‘umble fellow with bad back gets to go back with working animal (8)
4. Penny carries injuries from cliffs (6)
5. Guardian caught queens squeezing blackhead in front of you and me (8)
6. Place one at top of street (6)
7. Use up peeled bananas over time (7)
8. Artist’s stomach skin has one injury (6)
9. Show remodelled lips in 24 hours (7)
10. Raced to get gold back from beastly adversary (6)
11. Pens for apprentices (7)
12. Bedclothes may be in new goods found outside (6)
13. Miserable altos run into river (8)
14. Idiot is part of band I’m with! (6)
15. Hard stuff found in players’ club (4,4)
16. Won back Bob’s threads (4)
17. Regularly seller envied part of dress (6)

Down

1. 26 bit of corn in arid surroundings (6)
2. Went to dine out quietly inside (6)
3. Start with MD (4,2)
4. Wanderer gets back now inside before you start process of getting well (8)
5. Managed to enter city for lecture (8)
6. So much order is lost – so much! (4)
7. Vacillate when clerical division was overturned (6)
8. King, say, has small bits of countries (7)
9. Took a tumble when drunk around Wallsend (7)
10. Wins one race on road, north to south (7)
11. It’s old, stupid and impassive! (6)
12. Head of Tesla moved swiftly in swirling mist before broadcast (8)
13. Physician and monarch go round at home tippling (8)
14. Sale of goods was put back on again (6)
15. Rise to shake up Sally (6)
16. Novel bottomless bag? (6)
17. Official delegation excluded all Nazi leaders (4)