So, I took the plunge and decided to cut three inches off my hair yesterday.
I don't regret it as it desperately needed the trim.  I'm pleased to say that most of the bleach is out of my hair now - probably only an inch to two inches left!  
Still, it did make me feel a little blue as my hair is now back to just below shoulder length.  I've always known that this is a long journey that I'm on, and one that will have its ups and downs, but still, it is frustrating when you realise that you just have to take that step, and cut off the damage!  I will try and get some pictures posted for you to see.
The journey continues...