@Snog
It's about time that we overthrew the monarchy.
We don't have to overthrow the monarchy or guillotine them - they have no practical power over us, we just have to move them to oneside.
In other words we just have to vote to change the current system.
So you need a political party that will be prepared to hold a public referendum, followed by a plan to disentangle the institution of the monarchy from the different branches of government/military etc. plus a plan to replace the head of state with an elected head of state and how that would work.
Plus a plan to set up a new department to oversee the running and preservation of all the Crown properties and historical archives etc. and deal with the employment, reemployment / redundacy of the 450 people who work for the Crown estates. (although I assume the Queen and others would take some of the staff with them to their private residences).
The Windsor family would just pack up their stuff from the Crown properties and go and live in their various private residences. That's the simple bit.
The complicated part - like with Brexit - is agreeing on, voting on, rewriting and implementing all the laws which currently involve the Monarchy - election laws, opening of parliament, turning bills into Acts of Parliament etc. Deciding what system to use for the new head of state - President of the United Kingdom? Make the PM just double up on duties?
None of the political parties want to touch it with a barge pole - it would be like Brexit on acid trying to get all those decisions through and a lifetime of unpopular wrangling over the minutie of the whole process.
Which comes back to why they trundle on - better the devil you know.