Finland:
Soul Seed (Turku), a monthly night since 2003, mostly rare soul with some funk thrown in.
Soul Sides (Helsinki), since 2003 also? Currently bi-monthly, similar music policy as above.
...Also some smaller club nights, some more regular than others.
No regular 'Northern' nights at the moment, there was one semi-regular between 2001 and 2007, probably just one-offs from now on.