A majority of the British people voted unequivocally in the 2016 Referendum to leave the European Union. The vote was to leave with no deal, i.e. under WTO rules, because no deals were mentioned on the ballot paper.
The 2016 EU Referendum asked voters whether they wanted to remain in the EU or leave it. On the Referendum ballot paper there was no mention of any conditional deal with the EU as to the manner of leaving – we simply voted for Britain to cease being a member of the European Union and revert to pre-1973 independence.