Britain's Port of Dover says it is operating at more than 90% of freight traffic volume, one month from the end of the Brexit transition period.

Dover's traffic statistics come at a time of uncertainty for British ports as they adapt to a post-Brexit world, with Northern Ireland in particular, reportedly experiencing some difficulties.

The Port of Dover – in South East England – provides the shortest sea crossing to the Continent with the company insisting border systems are operating efficiently.

"I'm really encouraged to see such a positive start to the New Year as we adapt to the new systems and processes involved in a new, post-Brexit transition era," said Port of Dover COO, Sarah West.

"Our operation has proved its resilience and flexibility in the past by successfully adjusting to many major changes in our external landscape and I have great confidence it will continue to do the same.

"The message to hauliers is as long as you come to [the] Kent border ready and with a negative COVID-19 test, then it won't be long before you are on your way to France on the shortest ferry crossing."

The Port of Dover handles up to GBP122bn (US$168bn) or 17% of the UK's trade in goods.