As I posted else where on here, expect more 'issues' for a the first few weeks in january when this lot kicks in to make it "easier"
I am sure you are aware of the slight change to the importation of goods into the U.K. as of 1ST. Jan 2022. From the beginning of the new year we will raise the import C88 as normal, we will then send you the entry number for your shipment, this entry number must be passed to the haulier carrying your shipment, the haulier will then have to raise a special reference/bar code(GMR) for your goods and this they will have to present at the port of exit Calais/Eurotunnel Etc. As the ship/train leaves France the Customs entry will automatically clear on the ship/train.