Mmm. Well I took Grade VI (Merit, I think), and I did all the pieces for Grade VII but decided there was little point in spending time preparing for it, so I moved on to just play concertos instead. My tutor said I was at/very near Grade VIII standard but I don't believe her - she made me play tortuous pieces that were enjoyable but oh so hard, both technically and stylistically!
I wish I could continue with lessons, just so I can have motivation to play regularly and so that my tutor can recommend pieces... I have a Bach concerto I want to tackle, but it's way above my level and I just have no motivation to try to break it down into sections and practise it. The first half a dozen lines consist entirely of quadruple/triple stops
Vibrato at Grade I/II?! Are you insane?
I had bad form when I started, which my second tutor only picked up on. I had/have a lot of bad habits. My vibrato's quite good now, though
And yes, you should definitely restart playing the violin. Il est très sexy.
Next year at university I am determined to join an orchestra. I must find one where everyone isn't a virtuoso though... I can advertise that I can resort to the viola if that makes me more likely to be accepted!
Edit:
This is part of the concerto, 5th movement...