The rules are due to get even tighter when a three-month grace period for some goods expires. read moreReporting by Graham Fahy; Editing by Alison WilliamsOur Standards: The Thomson Reuters Trust Principles. CUSTOMS BORDERBritain left the EU's single market a month ago with a trade deal that also created a customs border between Britain and Northern Ireland. London feels it has gained some moral authority since the European Commission briefly threatened last week to impose emergency controls on vaccines crossing the land border. The issue was arguably the most contentious in Britain's five-year Brexit negotiations, and the search for an arrangement led to the downfall of Prime Minister Boris Johnson's predecessor, Theresa May.
the three-month grace period will definitely not expire.
( z0 expire :ARG1 ( z1 period :duration ( z2 temporal-quantity :quant 3 :unit ( z3 month ) ) :mod ( z4 grace ) ) :mod ( z5 definite ) :polarity - )
(z0 / expire-01
    :ARG1 (z1 / period
              :duration (z2 / temporal-quantity
                            :quant 3
                            :unit (z3 / month))
              :mod (z4 / grace))
    :mod (z5 / definite)
    :polarity -)
the three - month grace period will definitely not expire .
z2 :quant 1
z2 :unit z3
z1 :mod z4
z1 :duration z2
z0 :polarity 0
z0 :mod z5
z0 :ARG1 z1