I think they are great! I have yet to dabble in night photography but if my attempts turn out like this then I will be a happy bunny!
What time of night was it when you shot these?
I like the first one very much - very good exposure. Just a bit of noise in the sky - what ISO were you using ?
The idea of the motion blur in the second is good, although the image overall is soft / slightly blurred.
The third is very crisp and sharp, just a slight shame about the blown fascia sign.