British yields make one of biggest forays into negative territory in 300-year history

By Ana Nicolaci da Costa and David Milliken LONDON (Reuters) - British gilt yields made one of their biggest forays into negative territory in their 300-year history on Wednesday after a bond rally sparked by the Bank of England's unexpectedly aggressive stimulus package unveiled last week. Yields on two non-benchmark short-dated government bonds went into negative territory for a second day running for the first time, and a third dipped into red, having first done so shortly after Britain's dec