I realised that I need a plan and a strategy, and I still need to work this out. But I did make a start by travelling to/from Moorgate rather than Liverpool Street. However I dont really want to cover all of the areas closest to my office at the start, leaving all the furthest locations till the end.
Sun Street has the wealth of the Exchange Square buildings on one side of the road, whilst the other is very run down. However a lot of old run down buildings are boarded up and it looks like it is going to be redeveloped fairly soon.
Round the bend towards the end of Appold Street, I noticed the street name change to "Snowden Street", which confused me. However later I realised that the sign is kind of in the wrong place, but definitly facing the wrong way as it as side street, just round the corner of the building in this picture.