Iceland Seafood International (ISI) is shuffling its management team in the United Kingdom as the division's "extreme external challenges" continue to drag on its earnings.

The integration of the Iceland-based company's UK operation has been more complex and costly than anticipated, the group said in announcing its third quarter earning.

ISI CEO Bjarni Armannsson said a "combination of ramping up a renovated factory, dealing with challenging logistics from southeast Asia and merging two factories in a period of COVID-19 issues and Brexit" all conspired against the division.