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:

[@kindle7191]

Dad and Uncle Steve! How handy to have a family work crew!

[@carmakeover2724]

Looking forward to the build 👌

[@joekent230]

Well done 👏

[@scott_diy]

Thank you 🙏🏻

[@gjef9971]

Handy video mate

[@yourmamaok]

Looks good .could you list quantities of materials

[@wrenwest4887]

Maybe you can find a person to hold your camera or a tripod to keep down the herky-jerky movement - creates nausea!