Cryptic crossword No 3,451

Across

1. Swerve poor, displaced subjects (10)
2. I recall Parliament - great work! (5)
3. See 3d
4. Number of the Beast, seen from a short distance (7)
5. Incredibly cool to swear fluently (9)
6. City woman's divine! (7)
7. Stray snake in Morecambe? (7)
8. Beguile uncharmable case lawyer (9,6)
9. Author's charged piece on shoplifting tip (7)
10. Tribulation of loner - he's in the Bible (10)
11. London street bums tail scientist drinking gin fizz (9,5)
12. Broken, friendless boyfriend (3)
13. See 21a

Down

1. I left in tense, avant-garde style (6)
2. Cops for past act (3,4)
3. Forecasting is boring after rain petered out (14)
4. Back judge after double deal (6)
5. America bitter about payments (8)
6. Chair of dodgy club? (8)
7. Scramble blueish chopper (7)
8. 'The Final Countdown's' intro - and outro! (9,2,3,3)
9. Consumption of soldier eaten by headless whale (6)
10. Holy man's holy man gets tone wrong (2,4)
11. Co-ordinating Ginny's Cornish break (13)
12. Share in composer's thoughts (13)