You change the law. Change leasehold laws. Return royal lands to the people.
You know, things that people in republics do.
Louie Burns calls on the Queen to end our feudal leasehold system -
That wipes out a great deal of their ill-gotten gains.
Do a hong-kong type handover 50 years from now to give them time to get their affairs in order.
Then you alter the pillars supporting the class system - bbc, city of London, city banking etc, police force, army, house of lords, senior civil service, city gentlemen's clubs, public school system, oxbridge, law chambers, judges etc. Change the management and then put quotas on all of them.
I feel like Britain is going to be one of those societies that has a monarch for as long as it exists

But who knows