Which part of free is not-free?
"The government has signed a deal for open source Libre Office to be made available across the public sector"
A deal implies money. It would be interesting to know what the government is paying for and how much. I know it isn't a cost free exercise but it would be good for everybody to understand what the savings would be.
On a secondary note it will be a wonderful day when government (local & national) documents arrive in an open rather proprietorial format.