MPs have expressed scepticism about the Government's ability to deliver wide-ranging benefit reforms on time.
The Work and Pensions Select Committee said Iain Duncan-Smith's department had worked at "a snail's pace" and failed to be open and transparent with their investigation.
Whilst it is right to ensure that the system works properly before extending it, there is a difference between cautious progress and a snail's pace.
Given the excruciatingly slow pace of roll-out to date, it is hard to see how the most recent implementation timetable can be met.
Effective select committee scrutiny depends on the provision of accurate, timely and detailed information by government departments.
DWP has not always provided this to the committee in the case of Universal Credit.
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