Funny thing is if you like at Theresa May's domestic policies they have been quite different than Trump.  Although she is committed to Brexit, she did vote to remain not leave.  Also she voted in favour of gay marriage and was the equality minister when legalized under the Cameron government.  True on immigration she has taken somewhat of a hardline, but Britain still accepts refugees and doesn't have any blanket bans.  Also to be fair unlike Canada, Britain doesn't have the space to grow its population, whereas we still have lots of room.  Even with much of Canada uninhabitable, we should have more not fewer people than Britain.