All depends on the new teams at step 2. In my first season, 4 southern-based teams (Boreham Wood, Torquay, Eastleigh and Wealdstone) got relegated from the Conference so it meant teams like Boreham Wood went into the North, as above. Oxford City would maybe be an option, but the database has Court Place Farm (Oxford City) as slightly further from the North Pole than Meadow Park (Boreham Wood), byt the matter of 0.11 degrees of latitude. Hemel Hempstead's round Vauxhall Road is actually inbetween those figures, so BW "wins" again...
The footprint of the North has been slowly getting closer to London for the past few years. The games bases it on the co-ordinates of the stadiums.