Is https://www.openstreetmap.org/relation/19508737 basically the same as https://www.openstreetmap.org/relation/19774128 ?  If so, the shorter, partial one (the one I added earlier) can be deleted - but near Marsden I think the https://www.openstreetmap.org/relation/19508737#map=19/53.604303/-1.940405&layers=T route is correct and the https://www.openstreetmap.org/relation/19774128#map=19/53.604416/-1.940647&layers=T one is not.
Best Regards,
Andy