I have always considered RPI to be the more realistic measure of inflation, rather than the politically fiddled CPI introduced by Gordon McRuin.
This is why RPI is used by the Government to set / justify all rises that increase Government revenue and CPI when it has to spend money like pension increases.
IMHO either CPI or RPI should be used for all.
The CPI con has a profound effect on our real and actual GDP
growth shrinkage, which would be much , much worse using the more realistic figure.
Inefficiently and badly run monopolies like rail and water being allowed to use RPI + n% per year, where if they were run of the same lines of private companies in competitive industries, where you need to increase productivity by 2% per year to survive would mean that investment could come from such productivity savings.
I accept that energy cost are increasing faster than inflation as a whole and railways use a lot of energy but this must partly be due to that out of control windmill breeding program, where they are springing up everywhere.
Not only is wind generated electricity hopelessly uncompetitive at £120MWH for on-shore (£200+MWH for off-shore) compared to £45MWH for conventional power stations, but presumab;y a new BR excuse will be the trains are late or not running due to a lack of wind.
I would like to see how these rises are justified by much clearer public accounts with much more transparency, so we can really believe they are necessary and not just another example of crony capitalism between the Government and the rail companies.
Every extra £1 charge for inefficiency is £1 less for the commuter to spend on living. Compared to bus drivers, trains drivers due to union power and militancy are IMHO grossly overpaid.
Yes, the comfort and facilities on trains has improved over the last 30 years, but the same is true for cars, so it would be criminal with the fare increases over this time if they weren't.