Confirmation that Boris Johnson was heading to Downing Street was greeted by a fall in sterling — and a new round of warnings for Irish business to buckle up for a rough ride.

The fall of Theresa May pushed sterling slightly higher, but only after the currency had fallen sharply in the past week on the prospect her probable successor, hard Brexiteer Boris Johnson would drive Britain out of the EU without a deal.

Both Limerick and Cork Chambers have long argued that a motorway linking the two cities is vital for the economy in the south of the country.