UK Prime Minister insists Brexit ‘teething problems’ can be resolved

Prime Minister Boris Johnson has come under fire over supermarket shortages in Northern Ireland. Picture: PA

Boris Johnson has admitted there are “teething problems” in the post-Brexit trade relationship between Great Britain and Northern Ireland as industry experts warned there could be fresh shortages on supermarket shelves.

Retailers warned that shops in Northern Ireland could face further problems unless the EU is prepared to extend the “grace period” in the Brexit agreement.