Cryptic crossword No 3,452

Across

1. Tennis great is history following retirement (6)
2. Least interesting? Certainly boring - Ms. Thunberg to her friends perhaps (7)
3. Former PM embodies Liberal constitution (6)
4. Husband not originally big in size makes incredible transformation? (4)
5. Reportedly Annie didn't hear chap talking to Daisy? (7)
6. Geriatric from Homer's plant in Springfield very laid back (7)
7. Appease heartless monarch with the heads of Calvinist Huguenots (6)
8. Spooner's expression of disapproval still a positive response? (3,3)
9. Uh-oh, endlessly dire teaching is rocking universities etc. (6,9)
10. Best man takes drug, gets increasingly loud (7)
11. Where parties share power and neither left nor right suffers (8,7)
12. Lactate? It's liquid calcium carbonate essentially (10)
13. "Stroke face, then stomach" - lover's tip (5,5)
14. Miss P.E. with clothing issue (4)

Down

1. Sheikh angry with northern gang who took pieces of 7d (7,4)
2. It's irregular irregular irregular when last becomes first in line (9)
3. Not really a Chancellor, some might say (5)
4. I am limp initially beneath posh old lady getting physical (8)
5. New hire having a quiet drink with exec oddly swallows nothing (9)
6. Triumphs thwarting Kilmarnock finally after tight game (11)
7. "Sweet" label upset topless boyfriend (6)
8. Decision that lacks conviction (3,6)
9. Tea bags in teacups? (5)
10. Look almost on the boil (6)
11. Sleazy bar rejected space near church grounds (8)
12. Make sense of trainee failing to close sandwich shop (9)
13. Appearance of cops blowing cover (5)
14. Some smear themselves here (5)