Means testing of benefits. This is one of the crucial differences in approach between the Labour and Conservative manifestos and it deserves a closer look than it is getting.
The Tory approach is to means test each benefit so that they are only paid to those who most need them. Which seems fair enough on the surface if you don't think too deeply about the practicalities. The Labour approach is to avoid the means testing a pay the benefit across the board and then claw back the costs from the better off recipients through the tax system.
There are two advantages to the latter which don't seem to be immediately obvious to people. Means testing is generally a fairly complex and tedious process. So the first failing is that many people who most need a benefit will not go through the demeaning and unpleasant process of means testing. Which means the societal benefits ( i.e. having healthy nourished children that learn more, grow up to contribute more and are healthier therefore ending less from the NHS) aren't as effective.
However it is the second failing that needs a lot more attention because it is symptomatic of a consistent failing in political debate. Means testing IS NOT FREE. There are significant administrative costs involved. So more of the money goes on paying civil servants to process forms. Not only that but they will outsource the means testing to a private company ( such as ATOS) with limited knowledge who will take their own profits and get many of the assessments wrong leading to appeals costing even more in administration while people are left in distress aka mobility allowances
Clawing the money back from the better off through taxation does not incur that extra cost, or at least not more than a tiny fraction of it, because the administration of taxation is going to take place anyway regardless of whether or not means testing takes place.
Means testing of benefits is one of those things where a nice sounding theoretical case can be made but a case that fails when applied to the real world. My view is that it is the end result that counts rather than micromanaging every single payment in order to claim that nobody gets anything they don't need or deserve. Best to use the approach that involves the least waste overall.
I'm quite happy for a millionaire to get winter fuel payments and then pay back the whole lot as part of their taxes if it means wasting less public money on shuffling forms about.
I guess the counter argument (and I know there is a morality counter argument to this argument) is pay to all and claim back from the rich by increasing their taxes isn't necessarily going to result in an increase in revenue for the government due to tax avoidance techniques, therefore they'll spend the money giving to all without a revenue stream to pay for it. So instead of paying people to means test the poor (which has a negative rate of return) they should pay them to catch tax evaders and plug loopholes in the tax code (which will have a huge positive return).