Thatcher was never supported by a majority of those who voted in the country. Not even in England. In Scotland and Wales only a tiny proportion of people voted for her.
The party which put her at its head tore the country apart. It betrayed all its better traditions in the search for power. It is very likely that her longterm legacy will turn out to be the destruction of that party as an effective political force, with Tony Blair's party replacing it as the new home of the conservative tradition in English politics.
Once the European nonsense is out of the way after a referendum (whichever way it goes) I just cannot see what the point would be of having two conservative parties.