In reply to joe_lowe:
>
> I've been looking at newcaste-amsterdam, Amsterdam - Bergen route but ferries alone are coming I'm at £1000 return!
One evening in the winter I was bored and priced up driving from London to southern Norway. It worked out at about £800 but surprisingly little driving.
London to Harwich (?) - about 3 hours
Harwich to Denmark (Esbjerg?) - overnight
Drive through Denmark to Hirtshals - 3 or 4 hours
Hirtshals to Kristiansand - another overnight ferry
From there to whatever granite climbing destination you choose.
What made it expensive (about £800 iirc) were the overnight ferries, which all required you to take a cabin rather than sleep on the floor.