We're having the same issue, multinational company and sending hardware between countries is an absolute nightmare of paperwork now with significant delays.
Previously I could just rock up at dispatch with equipment, a sheet of paper with the destination address, insurance value and the goods would be there a day or two later, now it takes three different departments to authorise the dispatch, provide invoices as proof of value, carnet forms if it's to come back, invoices if it's not coming back and all the rest of the associated red tape, even then the delivery takes minimum of a week after all that's sorted.
Brexit is utter bullshit.