City workers who are used to flitting across the Channel or hopping on planes to Frankfurt have been reminded to get travel insurance, make sure their passport is valid and check their mobile phone provider’s roaming policy before they go to the EU.

The sharp reminder of the post-Brexit reality facing finance workers, when the UK leaves on 31 December, is part of a government campaign to prepare citizens and businesses for Brexit. The UK government has laid out guidance for people and businesses who travel to the European Union from 1 January as the country approaches the end of the transition period.