While the UK & EU negotiate the new exit deal arrangements, it's business as usual for ferry and tunnel bookings. There are currently no UK Transition related changes to transport, travel & customs requirements.
NO Brexit related VISAS required
NO Brexit related vehicle licence changes
NO additional UK <> EU import/export customs paperwork
NO Brexit related changes to your ferry & tunnel crossings
*Changes may apply from 31st December 2020.
"The UK and EU have agreed an exit deal. Both the UK and the EU need to ratify the withdrawal agreement by 31 January 2020. There will then be an implementation period until 31 December 2020 while the EU and UK negotiate new arrangements."