Next, British exporters must register to pay VAT in EU nations.
It's prompting a number of companies to halt their cross-border trade, @bdoaccountant says.
For eco-friendly nappy and wet wipe seller @mama_bamboo, "We have to ask is it worth all the time and effort.”
Another case: @PotatoHouseUK sells seed potatoes but new rules mean the EU effectively isn't accepting them 🥔
“We’ll need phytosanitary certificates & the paperwork’s going to have to accompany every order," says @andrewskea, who worries for the SME he built over 20 years
Next up: CE mark
Products sold in the EU need one to show they meet standards, but the UK will develop its own, so firms selling in both need to register twice
Subscription service @TheCuriosityBox, which teaches kids about science, says it's "a ridiculous level of duplication"