Not bad.
With the shot of the BBC/Bells bridge I think it's better to take the shot further back, at more of an angle. You've under exposed it which has given you a nice black sky and no highlights but overall it's a bit dark.
The wider shot looking down the river works well. I prefer it closer to the middle of the bridge but exposure wise it's really good and the reflection etc makes for a wonderful composition.
The shot of the Arc bridge and flats is a good exposure and whilst there are a few highlights its preferable exposure wise to the first. The top of the flats is a little close to the frame edge, a little more space would help.