Thanks for the comment and link here.

I didn't mention but I also have a bed sheet which grounds me through fine metal conductors in the material which all lead into a single cable which plugs into the soil in the garden.

After living this way for so long it is hard to imagine the old way. Airports have forced me to put shoes on in the past and it was such an alien feeling. Very uncomfortable and hot!

Lovely to see someone sharing the work of another here :)