After several reports of UK motorcyclists being confronted with extra post-Brexit bureaucracy, or even turned back at the border, FEMA (Federation of European Motorcyclists), FIVA (the historic vehicle federation), and the UK's own NMC (National Motorcyclists Council) decided to take action.
In December 2021 they wrote a letter to the European Commissioner to ask for a solution. The reply from the Commissioner arrived in May 2022 and is crystal clear: ‘Means of transport entering the EU temporarily and leaving back to the United Kingdom after a few weeks can be placed under temporary admission and declared to customs