The queues are not necessarily on the docks, or even in UK docks, or they are and they're waiting for customs clearanceBut this is about food coming into the UK from the EU so Do er is not really relevant, is it?
There were reports on social media of even longer queues, of up to 18 miles in Calais.
What's been causing lorry queues at Dover?
Is Brexit to blame for long queues of lorries outside Dover?
www.bbc.com
Recent disruption has been even more significant around the French port of Calais since new customs controls were introduced on goods imported into the UK at the start of January.
‘Brexit to blame’: Huge lorry queues at Dover blamed on extra checks
‘It’s entirely Brexit,’ says haulier who has been caught up in 15km queues
www.independent.co.uk
etc.
Hence the tomato shortages.