cryptic crossword
3a Enclosed-be quiet. 7a Better loses his head, so he goes for a walk (6)
9a Sweeping cocaine away (7) 11a Biased social worker in vehicle (7)
16a 31 days to be a hundred, or otherwise (7)
19a Im a long time getting the pictures (6) 1d Meaning Im left at sea (6)
2d Second personality in reworking of ogre tale (5,3)
15d Nevertheless, flats old (4,2) 12d Mean boy here in France (8)
Many thanks to anyone who can help