Ok, so how do we decide which charities out of the gazillion around are worthy?
That would be for a select group to develop a green paper on, but I would imagine things to take in to account would be:
1)whether the charity wants to be nationalised
2)what percentage of their income would be saved if no income generation activities took place?
3)are the activities of the charity overlapping with a previously nationalised charity (for example there must be at least 20 alzheimer's charities - only one would really need to be nationalised)
4)how important to society at wide is the issue the charity is addressing (e.g. cancer research UK would be more likely to be nationalised than Climate Outreach & Information Network)
5) is the charity political at all? For example, most of the activities of the Campaign for Better Transport could be considered political - this would bar it from being nationalised.
I'm sure that there are far more things to take in to account, but these 5 points would be a good place to start. Equally you could just take the top x amount.
EDIT:In fact, if you look at charities that make over £10 million each year and operate nationally you're only left with just under 400 charities, however, many, if not most of these are special interest and/or groups that run themselves as charities, but are not charities in the traditional sense (e.g. the College of Law).
EDIT2: Right, removing
a)colleges
b)religious groups
c)'duplicates' (where a charity is registered under two numbers for admin purposes)
d)charities with one major donor (and they thus don't have income generation activities)
e)chartered institutes/trade bodies
Takes the list of charities mentioned above down to just under 300. I'm sure that applying the 5 stage test above would probably reduce that list to about 150. If we say that on average they spend a third of their money on activities that can now be reduced/removed entirely (fund raising, shared admin etc) and that on average their income generation is £50 million (an overly conservative estimate) then we are looking at a total saving of £900 million, which could be ploughed in to each of those charity's core activities.
And can't compare national health care with a lifeboat or child abuse charity... the scales are monumentally different. There's a rason NHS support comes out of tax, and the various charities don't. A very obvious reason.
A better example would be to compare the Fire Brigade (paid for by taxes) to the RNLI (which is a charity) - if your boat starts sinking and you need saving is it that different from your house being on fire and needing saving? If you are in British territorial waters surely you should be able to expect as much help as if you were on British land?