If all the FTSE100 companies still using the RPI inflation measure in their pension schemes were to move to using RPIJ, the combined pension deficit could fall by up to £20bn, LCP says.
UK Consumer Prices Index (CPI) inflation fell in the year to May, after the previous month saw its first climb in 10 months.
The rate of UK CPI inflation rose in the year to April, the first increase in ten months, according to the Office for National Statistics.
Natasha Browne looks at the causes of a prolonged period of falling inflation
The Consumer Prices Index (CPI) fell for a sixth consecutive month in March to hit a four-year low, according to latest figures from the Office for National Statistics (ONS).
The UK's headline inflation rate dropped to 1.7% in February, its lowest level since late 2009.
Natasha Browne asks if schemes need to take further interest rate measures
Natasha Browne asks what the latest inflation report means for pension schemes
The UK inflation rate dropped to 1.9% in January, marking the first time it has fallen below the Bank of England's target of 2% since November 2009.