Including, of course, EFTA - as Norway, Switzerland and the other "fringe" states are. Which, of course, would still tie us to EU standardisation (as would simple economics, since we'd inevitably be sourcing the same products from the same plants as EU countries). Except we'd have bollock-all input to the EU.
Seems to me to be losing input for no gain, just to try to make some ill- considered political point founded on misunderstandings and plain lies.