CPI was 1% September '16.
Whenurhappy, after being given notice of redundancy I received a pensions forecast which was in error (~£15K lump sum/£3K p/a pension). I contacted them and was told "not to worry, it's just a forecast based on the date of issue." (I achieved 5 yrs as PA just after the forecast was issued). After Sep '12 I received my lump sum and pension. They were ~£15K and £3K out respectively.
A strongly worded letter of complaint, including supporting evidence printed out from my JPA pages as to my >5yr status as PA, resulted in a cheque being issued and an increase in my pension. So, keep a VERY close eye on things and have the evidence to hand - it will be difficult to gather evidence once you have left, to say the least.