Investors' worries over Brexit lead to increased sterling volatility

Measures in pound's volatility reach levels that close in on last year's pre-general election confusion, with buyers keen to seek protection from a slide in value

Investors' jitters over the Brexit referendum have reached levels not seen since the 2015 general election as financial institutions seek protection from a fall in sterling, according to market data.

Measures of volatility in the value of sterling indicate mounting fears that Britons may vote to leave the EU and further weaken the British pound.