I have recently walked part of the St. Cuthbert's Way from Kirk Yetholm to Melrose, just to say that the signage was the most comprehensive than I have seen before. Whilst I would never recommend that you should walk without an OS map etc. I think that I could have walked this one so long as I kept a lookout for the signs.
Pennine Way 2005&2014; C2C 2006; SWCP 2007; WHW 2008; GGW 2008; Dales Way 2011; Clev.W 2012; Yorkshire W.W. 2012; Offa's Dyke 2013; Peddars Way & Norfolk Coast Path 2014; Pembrokeshire Coast Path 2015: LEJoG in stages 2018: Camino 5/2019.