- An open border was a key plank of the 1998 peace deal which ended 30 years of violence over British rule in Northern Ireland.
DUBLIN: Northern Ireland's supply chain is "within days of falling apart" as new post-Brexit checks stem the flow of freight into the UK province, hauliers warned on Monday.
Supermarkets are "experiencing considerable difficulties" stocking shelves since the Brexit transition period ended, said Road Haulage Association (RHA) policy manager for Northern Ireland John Martin.
"Some companies have decided to put on hold supplying Northern Ireland because of the uncertainty or because of the delays," he told AFP.
Even with freight volumes running at "30 to 40 percent of normal volume" owing to coronavirus restrictions, new systems are struggling to cope with the new processes required to deliver produce from mainland Britain, he said.
"The thing is literally within days of falling apart," Martin added.
Shoppers in Northern Ireland have highlighted on social media how some supermarkets have been sparsely stocked in the 11 days since the Brexit transition period ended.
Supermarket Sainsbury's said last week that "a small number of products" were "temporarily unavailable" in the province "while border arrangements are confirmed".
January 1 marked the date when the full effects of Brexit were felt, four years on from Britain's seismic 2016 referendum decision to split with the European Union.
Special arrangements have effectively kept Northern Ireland aligned to the EU customs union and single market, to prevent the re-emergence of a hard border with the Republic of Ireland.
An open border was a key plank of the 1998 peace deal which ended 30 years of violence over British rule in Northern Ireland.
The move requires special checks on goods arriving in Northern Ireland from mainland Britain in case of the risk of them heading across the border into EU-member state Ireland.
London and Brussels agreed a pact in December to grant temporary "easements" from checks to supermarkets to ensure full supplies can be delivered in the months after January 1.
However Martin said the relaxation of rules "isn't having an effect" because firms are choosing not to export to Northern Ireland.