I took the ferry to Sweden and back again, and I think that flying to a place for a "green" vacation is a contradiction in terms. Obviously crossing the Atlantic or Pacific requires a flight, but to really be kind to the planet, travelling surface is the way to go. If you have to fly, you should make sure that you are staying for a long time. Hopping on a plane for a week holiday is about as ungreen as it gets.
You can take the ferry in Newcastle and come back via Harwich for a nice round trip;
www.scandlines.com
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I agree wholeheartedly although taking the ferry from Newcastle or Harwich will put you ashore in Esbjerg, Denmark and from there it's still a three and a half hour train ride to Malmö (via Copenhagen). Just for clarity. NB They Gothenburg-Newcastle ferry stops running in October 2006. Have done this in the past and it was a good alternative. DFDS have put paid to Newcastle though, and Harwich not the best for most of the UK.
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