Wing mirror loose

[PJP500]

Hope someone can help. The black fitting on which the wing mirror sits is loose, so wing mirror turns downwards. Have reached inside door panel through speaker hole, but can't locate any means of tightening it. Anyone had similar issue?.

[PJP500]

Wonderful cars, but frustrating niggles at timmes

[PJP500]

Thanks Bluezeeland. Any advice on removing and refitting ---