The DWP have published a new impact assessment of the move from RPI to CPI for pensions.
Robert Peston here
It looks rather worse than it did in the previous impact assessment.
by 2050 if you have a pension, it will be worth 20% less under CPI than it would have been under RPI...
I thought the quote at the bottom quite telling...
John Ralfe, the pensions expert, says "this is a reduction in the value of pensions to pension scheme members and is a transfer from them to shareholders".