But the MPs found much evidence was anecdotal and now recommends harder evidence is gathered about the economic effects of the toll on both sides of the border.
The Royal Society's experts looked at data gathered since 1998, when a scare about the effects on rats of experimental genetically modified potatoes appeared to put the British public off the whole idea.
The scripts gathered dust, the scope of the production and the extent of the show's necessary visual effects deemed too expensive for a broadcast or cable network.