How to build a shed/garden room base - Using pier foundations

Part 1 of the garden room build: I wanted to find the fastest and best value for money way to build a base for my 4m x 3m garden room. I had a load of 7N concrete blocks left over from my house extension build, so I decided to build concrete pires. I didn't want to expense of a full concrete base and due to the bottom of the garden being shaded and damp, I wanted to raise the room off the floor to give it air ventilation. This is the first part of the garden room build mini-series. In the next episode, I build the wooden structure that sits on top of the concrete blocks. Tools used in this video are linked below: