Rolls-Royce has seen its share price rise 2.5% after announcing that its pension scheme had insured £3bn of its liabilities against the risk of members living longer, giving rise to predictions that the number of FTSE100 companies using this kind of insurance could double over the next 12 months.

FTSE100 engineering company Rolls-Royce saw its share price go up from 678p when the market opened to 695p at 11.30am GMT. The 2.5% rise beat the market, with the FTSE100 going up just under 2% over the same period.