Ahh, I assumed the certificate in the screenshot above was a type approval and not SVA.Trouble is this method is not Type Approval, it's SVA, Single Vehicle Approval, each one tested and separately certified and documented.
So just to make things clear, if you get a type approval, it essentially registers the vehicle as a motorbike subjecting it to tax, registration and insurance requirements but if you do a single vehicle approval, it allows you to continue as if it were a regular pedelec but makes using a full twist and go throttle (without pedalling) legal?