Last checked at 
LONDON, July 21 (Reuters) - The introduction of full customs
checks between Britain and Northern Ireland risks becoming
"incendiary" when the province's customers see higher prices,
empty shelves and the loss of favourite products, one of the
country's biggest retailers said.
Archie Norman, the chairman of Marks & Spencer, told
BBC Radio that the planned introduction of full post-Brexit
checks in October would threaten his business and prevent the
food and clothing retailer from providing its full range.
Customs officials have so far applied a light-touch approach
to checking goods entering Northern Ireland from Britain under a
protocol system that was designed to keep open the province's
border with EU member Ireland while stopping goods from
entering the EU's single market unchecked across that frontier.
Norman said the retailer had already struggled to get goods
into EU members Ireland and France since Britain left the
European Union's single market at the beginning of the year, due
to the huge amount of paperwork that was required.
He expects his stores in Northern Ireland to suffer a
similar fate if the introduction of full checks goes ahead.
"It risks being incendiary for the public in Northern
Ireland because you can't think of a more visible demonstration
of how you're no longer a full part of the United Kingdom than
you can't get your favourite Christmas products, you can't buy
M&S chicken, free range eggs, sandwiches," he said.
"It's going to be very very serious for customers."
The protocol keeps Northern Ireland inside the EU single
market for goods. Norman said M&S had employed 13 full-time vets
to tick boxes and fill out forms. Switching supply chains to
increase production in Ireland would increase prices, he said.
"I really, really worry about the visibility of this because
... everyone in Northern Ireland is going to see, very very
visibly, the impact of Brexit and the protocol because there
will be gaps on the shelves," he said, adding that they had
already delisted some products for Christmas.
Norman has followed rivals Tesco, Sainsburys' and Asda in
writing to Britain's Brexit minister David Frost to warn about
the impact.
(Reporting by Kate Holton; editing by Guy Faulconbridge)
