DUP's 'No' to Brexit deal puts brakes on Irish shares surge as expert question merit of customs deal

The surge in Irish shares exposed to Brexit came to a halt as the chances of Boris Johnson getting MPs to support his deal with the EU waned.

AIB and Bank of Ireland shares, which had surged in recent days in the countdown to the deal, slid 3.5% and 1%, respectively, as the DUP said it opposed the accord.