Unless these signs have been removed it would seem to be shared use (would be pretty strange for it to be marked as a NCN route whilst only being a footway)
https://www.bing.com/maps?osid=d193ccef-884d-4771-bc82-4c379681f515&cp=56.056031~-3.414989&lvl=17&pi=0&style=x&v=2&sV=2&form=S00027