The Register Office for "Northumberland Central" is in Morpeth. It has sub-offices in Ashington, Blyth and Ponteland ( and maybe elsewhere)
This will give you an idea of the part of Northumberland that it covers.
As well as the Journal and Evening Chronicle suggested by Sarah, consider also the "local" papers, the Ashington Post and Blyth News. These two were merged sometime in 1960/70s and survive as a free weekly, "News Post Leader".
( from one of your earlier posts... "Jewish Mission". Please be aware that although the term is used usually in a religious context, it was/is also used in the context of providing shelter, aid, advice etc, for people who are in need of it.. e.g. Seamen.)
Michael Dixon