David/Jordy, please may I ask how Hyde North-Cleethorpes is valid via Manchester.
There are no direct trains, so that rule doesn't apply.
The next possibility is the shortest route.
Hyde North-Romily 4 miles
Romily-Sheffield 34.5 miles
Sheffield-Doncaster 19 miles
Doncaster-Cleethorpes 52 miles
Total 109.5 miles
Hyde North-Manchester Piccadilly 6.5 miles
Manchester Piccadilly-Doncaster 61.75 miles
Doncaster-Cleethorpes 52 miles
Total 120.25 miles, more than 3 miles longer than the route via Romily, so this rule doesn't apply.
Therefore, the only remaining option is to consult the National Routeing Guide.
Hyde North is a related station to Chinley, Guide Bridge and the Manchester group.
http://www.atoc.org/clientfiles/File/RSPDocuments/routeing_point_identifier.pdf
To find which of these routeing points is appropriate, we must use the fares check rule.
Hyde North-Cleethorpes:
CDS £18.80
SDS £19.70
Chinley-Cleethorpes:
CDS £17.50
SDS £18.50
Both less than the equivalent Hyde North fare, so Chinley is an appropriate routeing point.
Guide Bridge-Cleethorpes
SDS £30.10, more than the equivalent Hyde North fare, so Guide Bridge is not an appropriate routeing point.
Manchester Stns-Cleethorpes
SDS £30.10, more than the equivalent Hyde North fare, so the Manchester Group is not an appropriate routeing point.
Cleethorpes is a related station to Barnetby.
http://www.atoc.org/clientfiles/File/RSPDocuments/routeing_point_identifier.pdf
The valid routes are therefore the shortest route from Hyde North to Chinley, which is via Romily, then any mapped route from Chinley to Barnetby using the routeing permissions, then Barnetby-Cleethorpes direct.
The routeing permissions for Chinley-Barnetby are: SH only.
http://www.atoc.org/clientfiles/File/RSPDocuments/permitted_route_identifier.pdf
This allows:
Chinley-Worksop-Retford-Gainsborough Central-Barnetby
http://www.atoc.org/clientfiles/File/RSPDocuments/maps.pdf
The only remaining option is to look for an easement. As far as I can see, there is no relevent easement.
http://www.atoc.org/clientfiles/File/RSPDocuments/easements.pdf
Jordy and David, am I missing something? If so, please could you point me in the right direction.