I'm glad I took those photos yesterday. I knew I had some defects in my posture due to sitting too long at computers, slouching and the like but this really brought it home to me.
Having done a little research it appears I have quite the laundry list of posture defects. Starting from the top:
1) Head forward
Also known as Kyphosis where the neck is angled forward instead of pointing up vertically
2) Round Shoulders
The shoulders slump forward instead of being aligned properly behind the 'centre-line' of the body
3) Lower Cross Syndrome
Also known as Anterior Pelvic Tilt, where there is an excessive curve in the lower back and the pelvis is tilted forward
To a less obvious extent it seems that I may also have uneven shoulders and hips where one side sits higher than the other.
I'm going to do a little more research and look at what exercises I can do in tandem with convict conditioning to help me correct all these imbalances.
I've also ordered a posture support which should help me maintain correct posture when I'm not exercising. I'll talk more about that when I receive it.
In the meantime, these are some of the links I found in the course of my research for those that are interested:
https://www.bodybuilding.com/content/posture-power-how-to-correct-your-body-alignment.html
https://www.youtube.com/watch?v=TQqgf8kB6R8
https://www.youtube.com/watch?v=htuCUJmfsdw