We're planning on doing a run from Portsmouth to Papa Westray on the Orkney isles to see our friend at some point soon. As far south to as far north as you can reasonably drive!!
You'll have to get a ferry but it's all very doable getting there.
You can travel from Sccrabster or Aberdeen to Orkney rather easily.
What information do you need to know? There's a few hostels there you'll find quite affordable and pleasant :)