Two elements are compulsory in any effort to reshape the British welfare system. First, the reform must be described as radical and far-reaching. Second, there must be an assertion that it fits with the views of William Beveridge, whose 1942 report underpinned the setting up of the welfare state. The plans outlined this week are stronger on the second element than the first.

In the paper published on Monday, James Purnell, work and pensions secretary, began by citing Beveridge’s principle that social security should not stifle incentive, opportunity and responsibility. The reforms he then set out are broadly familiar – and no worse for that. Sustained and vigorous enforcement matters more than a series of eye-catching announcements.