Cryptic crossword No 3,656

Across

1. He has a guarantee for millions, I gather  (8)
2. God, we're told, manages to make predictions for the future (10)
3. Guy gets a glimpse of underwear – saucy stuff!  (4)
4. Sick of Streeting turning on party’s leader?   (4)
5. Parents get hold of Hendrix regularly - they can talk to the dead (7)
6. After rape case, forensic training intensifies  (10)
7. Arts supporters are slippery types when drunk (6)
8. The leaders of Luddism originally opposed mechanisation in weaving equipment  (4)
9. Porcelain in Rome is sensational   (7)
10. Nazis overcome Reds when fiendishly cunning (10)
11. You and I repeatedly consume superior port – it's exorbitant!  (8)
12. Botanist repeatedly lacks time to develop horticultural technique    (6)
13. An overwhelming increase in posh people owning diamonds (10)
14. US state university brought back mortarboard  (4)

Down

1. Start to explore Sunday papers over coffee  (8)
2. Primate gives bishop a lift  (6)
3. State controls deployment of binmen in China’s capital  (8)
4. Exercise a touch of restraint with German authority  (6)
5. Infidel is a mix of 10 and 12  (6)
6. Heavy metal band creates a small disturbance in Minnesota (8)
7. Bloody sensible, drinking half of stout (8)
8. Bob, a name to conjure with - or Jack! (6)
9. Spice elevated fish in the Caribbean (6)
10. Opponents claim fries and coke, taken regularly, causes major damage (6)
11. Booze establishment you and I drink in extremely regularly  (6)
12. Pavlova has energy for one dance      (8)
13. After refusal of Chanel, for instance, smell rubbish! (8)
14. Disco this lad discovered in part of Greece (6)