EV cable shop
The extension posted is only rated to 16a and a max of 3.6kw. They don’t seem to have any of the 32a or 7.2kw in the 5m cables, they are sold out. https://www.evcableshop.co.uk/search?q=Type+2+to+Type+2+-+EV+Extension+Cable&type=product
There was a drop down menu where you could select 16A or 32A and 10m 32A was £99 when I initially posted, I had highlighted the 32A!