Well … it was actually to my son’s stag do, which was a very sedate affair (thankfully), at least while I was there.
A few comments on each one ….

In this one I liked the contrast between the regulation and formality implied by the buildings, contrasted with the random, rebellion of the graffiti.
The sky was a uniform pale grey. I decided to strengthen it by selecting the sky and replacing it with a gradient. Not ideal, so alternative suggestions welcomed.

This was very close to the buildings shot above.

It was the silvery tones and sense of 3D that caught my eye on this one.

Couldn’t resist the leading lines at Piccadilly Station

I don’t do much ‘street’ photography and this was a grab shot taken between venues.
It was actually a relatively small part of the frame so I used ‘super resolution’ in Lightroom to increase pixels and hopefully improve (technical) quality of the cropped image.
I didn’t actually notice the guy when taking the shot but, for me, he makes the whole shot more interesting than otherwise.
A few comments on each one ….

In this one I liked the contrast between the regulation and formality implied by the buildings, contrasted with the random, rebellion of the graffiti.
The sky was a uniform pale grey. I decided to strengthen it by selecting the sky and replacing it with a gradient. Not ideal, so alternative suggestions welcomed.

This was very close to the buildings shot above.

It was the silvery tones and sense of 3D that caught my eye on this one.

Couldn’t resist the leading lines at Piccadilly Station

I don’t do much ‘street’ photography and this was a grab shot taken between venues.
It was actually a relatively small part of the frame so I used ‘super resolution’ in Lightroom to increase pixels and hopefully improve (technical) quality of the cropped image.
I didn’t actually notice the guy when taking the shot but, for me, he makes the whole shot more interesting than otherwise.