The welfare budget is completely the wrong target and it is being done purely to appease knuckle-druggers. The welfare budget is a pittance because people on welfare get very little and it's barely enough to live. The number of outright benefit cheats is also a completely irrelevant figure.
This is ideological and not logical because what would you do? The welfare budget is around £50bn so would you save at best £1-2bn within that or would you spend the £50bn+ needed to fix the NHS so that waiting lists can be reduced to get people off welfare entirely?
The latter is obviously the ideal choice but who is making that argument? This is where government constantly fails us. Government is not run for the better of people, it is run as an Excel spreadsheet. The simple fact is nothing will change because it is actually cheaper to keep people on welfare versus the great expense of fixing the NHS and getting people back to work.
I’ve had a quick look at my knuckle-dragger fact book, and it seems that your numbers might be a bit off.
The welfare budget is currently around £310bn, not £50bn, and if you’re referring to health and disability benefits, these actually total around £75bn in the current fiscal year.
Critically, health and disability benefits are projected to rise to over £100bn per annum by 2030, and this government has tried (but failed miserably) to put a relatively minor dent in this expected increase.
Unfortunately, in the real world, savings will be required in order to fund higher expenditure in the NHS, and benefit fraud is not as immaterial as you suggest, given that it currently costs around £8bn a year.
Personally I think there is also a case to reform the triple lock, and to potentially replace the wage growth element with an inflation rate correctly weighted for pensioner expenditure, rather than simply using the CPI.
If done correctly this would help ensure that pensioners would be better protected from inflation caused by rising food and energy costs, but would likely stop pension liabilities from pushing significantly higher during periods of strong wage growth. Pension costs are expected to rise by £30bn per annum by 2030, so the areas of focus appear fairly obvious.