Night photos of Canary wharf London

These pictures were taken at night with a group of all amateurs, I had been to a night photo course and wanted to teach/share what I had learnt with my fellow colleagues.

f8, SS 8 secs and some of the pictures were taken with more than 8 seconds using remote shutter control using a Canon kit lens.

Crtics welcome.

Thanks in advance.

Nice exposures, perhaps low contrast on #2, but neither is level.

The tilt is distracting. I like the tones in #1 best. Perhaps a little cropping to a 16x9 aspect might help.

Is there anything totally black? perhaps there should be