Cryptic crossword No 2,081

Across

1. Scot or Englishman, it doesn't matter which, holding out at the end in region of North West France (8)
2. Perturbation caused by a French slip (6)
3. Put a lid on whisky (6)
4. Loony oddly grabbing bottom half-heartedly turns to psychiatric treatment (8)
5. Nothing against you Monsieur - I was one once! (4)
6. In deserts, without hesitation, imbibe 1cc regularly warn dehydration specialists (10)
7. Posh Queen and I never say a word about wee! (7)
8. Worked to achieve consistency as said required (7)
9. Subject hierarchy in Octavian system? (5,5)
10. Mess that might be hoovered up? Sounds like it has been! (4)
11. High flyers show skill (8)
12. Undergarment of spun fibres (6)
13. Assist movement where there is none? (6)
14. NY calm or going about business as usual? (8)

Down

1. Very important word describing activity held close to the heart - marvellous ultimately in its description of us! (15)
2. Foment rioting in polarised circumstances, giving grounds for prosecution? (9,2,4)
3. Spy charmed inebriated big beasts (10)
4. One batted attractively - as one would say, one hit sharply (7)
5. Cry being upset, or it could be an onion? (4)
6. One living in Guatemala, perhaps equidistant from Texas/Colombia?  (7,8)
7. Stating the reality of fame attracts a going-over (2,1,6,2,4)
8. See interlope parsed and transposed (10)
9. Selecting or throwing out? (7)
10. This tells you it's not just as well (4)