“One port operator has had to demolish building work for new checks, while other crucial customs sites don’t even have…
“Before ‘Brexit’, no import checks were necessary with the UK being part of the EU’s frictionless trading model.” https://yorkshirebylines.co.uk/ports-prepare-full-brexit-checks/
https://www.bbc.co.uk/news/amp/uk-northern-ireland-56521780?__twitter_impression=true