Britain is nowhere near ready to have that discussion, Australia in a few years I think could and then NZ a few years after, but Britain has a very strong attachment to the monarchy. So far there isn't an obvious need for change and with all the political instability it is easy for people to be attached to the current neutral head of state and fear change. Hopefully Charles does not fail as King, but if people really want a republic they should hope for that.
Speaking of New Zealand, and speaking to a New Zealander, how did the Maori react to Elizabeth's passing? I heard she wasn't that popular among them...