Some nice shots there, one place I have never been to but one i will now take a look at, thanks for sharing
not sure if it is the light, the sharpness or the processing but the reflection shots don't look quite right to me. There is a bit of the same over sharpened look to the skyline in the last one but the composition is good and it does not notice as much.
It's typical, i'm at uni in Durham, been here 2 years and I've NEVER been out on a day when the sky's that clear, and the river's so still!
I like the first, the second and third look a bit over-sharpened, as others have said!
Chris