Cryptic crossword No 3,958

Across

1. Sinn Fein enriches Irish Republican businesses - primarily flipping lawyers!  (6)
2. Sally Endlessly Snogs Topless Men!  It’s the sort of stuff newspapers write  (10)
3. Member of The Police jammed with less experienced artists  (7)
4. Runner fights to secure victory and cleans up  (8)
5. Car boot sale principally provides body parts (6)
6. Footwear that in Scotland is provided by government (5)
7. Go away with model to take photographs (5)
8. Cancer spots spreading?   They’re indications of what lies ahead  (9)
9. Disappointment caused by twisted, twisted Frenchman (8)
10. Luvvie regularly seen with a bit of a looker   (4)
11. Incredibly, Fermat’s Last Theorem is cracked by former pupil and pregnant woman (6-2-2)
12. First impression of Striding Edge?  It's a mistake (4)
13. Repair staggering, ageless part of Stradivarius?     (1-6)
14. Bent gear tends occasionally to get broken (9)

Down

1. Cycling’s curtailed on island/atoll in the Pacific (6)
2. Mr Nigel Farage abandons flag waving at last, turning into an opponent of Brexit (8)
3. About time cipher is demonstrated again  (8)
4. Most of celebrity cast is kept out of sight (7)
5. Notice shortcoming in guidance  (6)
6. Laity periodically joins cardinals for food (4)
7. Harry drops an e after a lot of smack – he's one of the in-crowd  (7)
8. Fighters cry about King being overthrown (6)
9. American, also Scotsman and Greek (8)
10. Spanish man drinks a little Estrella before start of work – it's cheap beer (8)
11. This is a big land mass like Iowa (4)
12. Royal, close to place where Prince Albert might have had pizza delivered, is withdrawing (8)
13. Charlie spent hour digesting recipe for sweet treat   (6)
14. Robbers uttered expletive  (8)