Cryptic crossword No 4,063

Across

1. A bit of fun! Savour in essentially bad taste (13)
2. Heavy overcoat - one of the 10a? (6)
3. Most rude! Look for apple pie within (7)
4. Lee's drug offer in alternative for what the proud old woman had? (4,5,6)
5. Setters arrive around last of meal? Hello! (7)
6. Catch sight of around 50 sex slaves beginning to eat? (7)
7. Banal rotter fuzz corrupted after too much sun? (5,2,1,7)
8. Baked dessert? I say! I'll put the question to the lady. (6)
9. Horribly a pain! Pure host of fleas (13)
10. Crazy start in van? (7)

Down

1. Somewhat foolish target of Babylonian worshippers? (6)
2. Moan at verdigris? Possibly OTT behaviour (15)
3. Fractured sternum one of the 10a? (7)
4. Redesigning firm coil, dreamer gets obsolete technology (9,6)
5. Operated on louse - set free! (7)
6. I sulk as mongrel dogs are found (7)
7. Soul train - a bit excessive? (5)
8. Hardliner to laze about (6)
9. Team drew badly for unexpected result? (3,5)
10. Around about Berlin night? One of the 10a (8)
11. Rolls-Royce convertibles? (7)
12. For starters, Susan adores light and delicious greens. (5)