Pensioners will be £770 poorer in retirement as a result of the policies announced in Jeremy Hunt’s Spring Budget, according to a leading think tank. The Chancellor confirmed a wave of new fiscal measures yesterday, including cuts to the National Insurance rate, a reduction in the higher rate of capital gains tax (CGT) on property and an overhaul of non-dom rules. Analysis from the Resolution Foundation found that families are set to gain £420 a year on average with these policies, with the poorest fifth of Britons getting a £840 boost. However, the think tank’s research showed that households…