On the subject of workflow, the only comment was that I should reformat my cards after backup - a good point and something I often forget to do, and often only realize after taking a bunch more photographs using the old card. My saving grace is the combination of the Lightroom being intelligent enough to only upload new images from a card and the fact that memory cards are so cheap now, space is not really an issue. My camera strap has 2 x 8GB permanently enclosed in a pocket to act as spares. I now have over 10 8GB cards, enough to use a new card every day when on an extended diving trip - this acts as an effective backup in case of hard drive failure on my laptop.
Regarding the individual images:
DPP1-1 Suggestion to crop some of the weeds off the bottom of the frame:
I have slightly changed the aspect ratio from 3x2 to A4 in doing the crop, something I will need to do to all images prior to printing. Reducing the weeds meant that I needed to reduce the inclusion of the left hand tower block - not sure about that. A more Panoramic crop might work better:
Not sure about this, it was the juxtaposition of the unruly foreground with the clean buildings in the background that originally brought my attention to this subject.
DPP1-3: Crop the image so that the tower moves further to the right of the image:
This does look better, however, there is only a little I can do without losing the reflections in the steel at the bottom of the frame. Again I have not much altered the aspect ratio of the image. This might work better as a square crop.
DPP1-5: The suggestion here was to clone out the lamp on the far right - not sure about that?
I think a slightly tighter crop manages the job - I am very unsure about using clone tools to tidy up images, beyond removing dust spots or optical artifacts.
DPP1-7: Reduce the glare from the panel in the bottom right
This is a rather crude reduction in exposure made in Lightroom, but it does aide the composition and removed a distracting element from the frame. I could have used a crop, however, I like the crane in the bottom right of the frame.
DPP1-8: Here the suggestion was to clone out the crane. This is the only case where I really disagree, for me the crane is a key element of the composition, one reason why I created this image. Furthermore removing it would be a singificant challenge as it occupies a large part of the image and is behind starbursts.
Overall very good suggestions and I realize I have much to do when it comes to balancing compositions. This feedback also raises two major questions in my mind, that of major modification and of aspect ratios in images.