By Andy Silvester Markets have shown little reaction to the news that Britain will be going to the polls on July 4, with the future path of interest rates still front and centre for investors. Both the FTSE 100 and the FTSE 250 have both shrugged at the news. It’s possible that there will be larger market movements as polling day draws near, particularly once the manifestos are published, but the prospect of a Labour government does not look like it will spook markets. “The prospect of a government spearheaded by Sir Keir and Rachel Reeves is unlikely to spark the sort of fear that would have …