It will mean the UK's trading terms with Canada will now be worse than when it was part of the EU's deal with the country. The sticking point is that Canada is using the UK's weakness in order to insist the UK will accept imports of hormone treated meat. If the UK accepts imports of hormone treated meat then it will create further divergence from EU regulations and risk the NI agreement. Not that my tits need to be increased to 38 c-cup.