The 74 has been around in various forms since Adam was a lad!  When I was involved, it was operated by Rochester & Marshal (R&M) of Gt Whittington - part of the now defunct Moor-Dale Group.  They operated a number of routes in the area.  Hexham to Morpeth via Ponteland and Whalton.  Hexham to Newcastle via Matfen and Stamfordham.  Hexham to Matfen.  They also operated the 689 Hexham to Consett.  Tyne Valley Coaches as Mid-Tyne Transport used to operate twice-daily through service from Bellingham to Newcastle via the Military Road.