Cryptic crossword No 171

Across

1. Tweet that's blasting Conservative about going for week on vacation (6)
2. Running risks, run on the run — run, run! (3,5)
3. In Nativity, characters heading down Bethlehem ask for place to rest and wash (4,4)
4. Gravity occasionally trapping jumper's hip (6)
5. After church, commanding officer passed parcel around circle that is full of sweets (9,3)
6. Sally, Jack, Elizabeth, and Paul, say (4)
7. Romantic urge is indeed all sin, semi-regularly (8)
8. Initially, MentalPlayground's gains fixed suffering from Twitch (8)
9. Barker's call, after slice from Federer on court (4)
10. Religious figures deposed tsarinas, after report of masked character (12)
11. Develop microbe's nuclei for adhesive material (6)
12. Challenging maths that's hard to pass (8)
13. Type of cable films starring debuts from Harry Enfield and Ross Noble (8)
14. A girl's given opportunity as minor contributor (6)

Down

1. Put the screws on grill (4)
2. Yields acid, base, and temperature, in upward cycle (9)
3. Siren talks up unclothed, unknown leader of Odyssean navy (6)
4. Surrey's opener scratched groin, nuts, scoring 12 using unsafe box (12,3)
5. Dutch bank charges those ignorant of when credit is due (8)
6. Unattached, insecure, slack, sloppy boyfriend (5)
7. Bottomless dessert served, offering extremely mouth-watering 12? (7,3)
8. Leisurely pursuit in school sports, with hint of thunderstorm forecast (3,7)
9. Once arms cosy, turned up at the foot of Scottish isle (5,4)
10. Forces to commit unknown numbers to the ground (4,4)
11. Department sacks Head of Chemistry for not working (6)
12. Potter places chalk there at the correct moment (2,3)
13. What, in French quarter, leads to untreatable oral infection (4)