Can I take a campervan from the UK to the EU and vice-versa?

Yes, you can drive a campervan from the UK into the EU, as long as you return it to back to a depot the the UK or Ireland, or the other way around . However, due to the right-hand drive in the UK and Ireland, you are not able to make a one way trip to continental Europe, as the cars in these depots have left-hand drive. The same applies vice-versa, as EU left-hand drive cars need to be returned to a depot with left-hand drive.