Any 12 year-old management consultant can make the case that sharing services saves money. It stands to reason.
Except that it's not true.
And now the Public Accounts Committee have a few words of advice for Francis Maude and the Cabinet Office:
Will Mr Maude listen to Parliament? Or to the agile 12 year-olds touting shared services in the G-Cloud?
Committee chair Margaret Hodge said: "Shared service centres have failed to deliver the savings they should have. They cost £1.4bn to set up, £500m more than expected, and in some cases have actually cost the taxpayer more than they have saved. I welcome the Cabinet Office's ambitious new strategy for improving shared services. But unless it learns from the past it will end up making the same mistakes again."