Cryptic crossword No 4,051

Across

1. Rational record circumscribing catalogue that AI's pinched (9)
2. Ultimately departs the area - off to go and fish? (7)
3. Southern church fences in border plot (6)
4. Better back in the pavilion perhaps, joining party (5)
5. Bag grouse, displaying violent behaviour (5)
6. Become adept in breaking up a teen goth fight (3,3,4,2,2)
7. Has the ability to take regular clippings from crocus lady (5)
8. Duration that's brief indeed (3)
9. Return part of plunder eventually or when hell freezes over? (5)
10. Faith's parents touring walls of Livorno (6)
11. International university took in parrot (7)
12. Take back crucial ecstasy from Spooner (9)
13. Removed poison from dead cat and one item experimented on (14)

Down

1. Sturdy ash chopped to bits in regular periods (9)
2. About king in play Guy directed: dead sensible (5,6)
3. King dressed in intricate cloth by yankee servant (6)
4. Type of beetle and wingless insect showing no activity (8)
5. Switzerland adjusted Rolo mould in solvent (10)
6. Amos who sings to rabbi, but not sailor or bishop (4)
7. A number of Henry's wives regret taking time revealing admirable trait (6)
8. Fat French person buying cocktail (11)
9. Boatman's expressions of refusal and surprise (4)
10. Persuading prisoner against decorating cake to hold tip of nozzle (10)
11. Stuffing the German into cab with Mary's clothes (9)
12. Diva cuts off elevated routes (8)
13. Abandon padded blanket when student leaves (4)
14. Quietly paddle in front of boat (4)