Earlier quoted context omitted.
Netflix funded production, so would have had strong leverage over MRC's relicensing. We can't see the contracts, but I'm fairly confident that Netflix would have had at least right of first refusal for rights for any region.
Leverage only goes so far. Since it was originally a BBC show ~20 years ago, chances are that country-specific rights were sold off long before Netflix got involved.
MRC licensed the name and concept from the BBC. That license would definitely not be regionalized.