In reply to afx22:
Langdale Boulders are another example - most of the problems are numbered, but don't fit either the Lakes Bloc or 2019 guide, nor do they have descriptions. To make things worse, the grades are frequently different, too. I would do as Pete Gunn suggests, but even after cross referencing topos I have literally no clue which problems are being referred to by most of the entries on the current page. Perhaps the Rockfax (which I don't have) is the missing link...
With Windy Clough I found the same problem, so I tried to give a descriptive name using the earliest topo I could find, to avoid the problem of numbering systems constantly going out of date and provide a verbal clue. E.g. Problem X becomes "Far left to far right traverse" or Problem Y becomes "Arete and Rail".