We approached St. Paul's from the side.
As we moved around to the front of the cathedral, I walked backwards as far as I could without actually moving in to the street so I could get all of the front facade in to a photo.
Then we turned left and walked clockwise around the building.
The side courtyard area which faces Pater Noster Square is used for official ceremonies. We happened to walk past as a South Korean dignitary was being welcomed by some people clad in military uniforms.
On the last Sunday we were in London we attended Evensong Service at St. Paul's. We entered the cathedral by way of the front doors above and and were requested to exit by the side door shown in the photo below.
We continued around toward the rear of the building and entered the back garden area through a gate. To our left we saw the statue of John Wesley, founder of Methodism.
The rose gardens are located at the very back of the cathedral. The plaque says that the medieval chapter house and cloister were destroyed by the Great London Fire of 1666 and that the gardens are laid out in the footprints of those buildings.