[chimeracoder]

> And also the adverts of sick babies who would not get the funding they needed if the money was spent on implementating proportional representation

Proportional representation and ranked choice voting are orthogonal concepts. A referendum for ranked choice voting doesn't necessarily implement proportional representation.

[r_hoods_ghost]

No, but it would likely be more proportional than the current system in the UK where the last time a single party won a majority of the popular vote was 1931 and yet parties usually have a majority in parliament. Proportionality is not a binary thing. You can have more or less proportional systems of government based on the selection / election mechanic chosen.