Quick update before I go away for a week.
My mum died a few days ago and I have to go back to Yorkshire for the funeral, so I shall be missing for a while.
The pipes went in for the geothermal.
The white blobs are carrier bags full of sand to keep the pipes in position while they are covered over.

The hole through the wall for this piping was a challenge. It had to be almost 1 metre below ground level. Except that it had to be below outside ground level and the outside is almost a metre below internal floor level. Me and Phil had to excavate this rather deep hole and then break through 75cm granite wall. It was fun !!
The distribution manifolds were attached to the top of the pipes.

Work has now started on filling the hole in.
The ground levels are being altered at the same time as it makes sense to do this while the big machinery is on site. It will make the garden easier to deal with if it is level with gentle slopes rather than steep banking