Howdy
We’ve done Norway, Sweden and Denmark a few times – happy to share what we know. You around this weekend? – I need to do an off road CX bike shakedown before the season starts and wondered if you are up for a spin on’t moor.
You can still get the Immingham cargo ferry to Sweden but bit of a slog driving in UK to catch it compared to easy 2 hours for Hull. Recently we’ve looked at driving Rotterdam to Kiel or Lubeck in a day then getting late overnight ferry (10pm ish) to south Sweden. Ferry costs add up but at least they sort an overnight and you are fresh for a full day drive / activity on the next day.
I think in order of expensiveness it went Iceland>Norway>Sweden>Denmark>UK.