(14 Sep 2023, 9:29 pm)busmanT wrote And RPI was been dropped as an official national statistic some time ago.
The Government doesn't like RPI, because it doesn't mask the problem. RPI includes everything in cost of living; mortgage interest, rent increases, housing costs and council tax to name a few, all of which are shooting up.
To emphasise this point, you'll find that when the Government want money from you, they'll always calculate the increase using RPI... see here an example: https://www.gov.uk/government/news/stude...ncement--4
If you're negotiating a pay deal on behalf of members, I'm not sure why you'd be expected to use an index that excludes some of the biggest costs members will have? It would be nonsensical.
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