The Business Secretary hinted the Brexit transition could be extended today in a decision that could leave the UK tied to the EU for years.
Greg Clark insisted that whether transition ends on schedule at the end of 2020 should be 'guided by the facts and evidence'.
He warned British ports had to be fully ready before Britain fully moves into the post-Brexit future to avoid chaos on the borders.
Port operators have said they can build new customs systems in time - but only if a trade deal defining the rules is in place by Brexit day in March 2019.
Business Secretary Greg Clark (pictured on Sky News today) hinted the Brexit transition could be extended today in a decision that could leave the UK tied to the EU for years
Talks have been deadlocked for months and fears are growing of a no deal Brexit, alarming business leaders worried about uncertainty.
Mr Clark slapped down Foreign Secretary Boris Johnson's jibe that bosses were damaging Brexit and his claim behind closed doors the Government should 'f*** business'.
Asked by Sky News' Sophy Ridge if transition should be extended, Mr Clark said: 'At all times we need to be guided by the evidence on this.
'Speaking to the people that run this very successful port (Dover) and the same with Eurotunnel in order to make sure that we can continue the success, and that we don't have frictions there are things that would need to put in place, computer systems for example, posts at the border,