I have a lab/collie 10 week old puppy.  She is lovely but getting into biting quite hard whoever tries to play with her.  We don't do the tug of war or chasing games etc. and we've tried the pinching the skin, screaching and walking a way and grabbing their jaw around our hands.  Any other suggestions please b4 we have no hands/heels left :-)

The important thing with training a puppy to do anything is consistancy.  Choose one methods that seems as if it might work for YOUR Puppy, and stick with it.  Most of the methods you've described involve something uncomfortable for the puppy, and some of them are even painful, which may be teaching her to come back at you even harder because she's scared :(  In any case make sure you reward her for playing 'nicely' - 'tug of war' games needn't be banned - so long as by playing them she learns not to let teeth touch human flesh....