There is a lot of comments all over this forum about how the Freeview EPG Series Linking should work and also questions about how it does work.
The series are linked, not by the title but rather deeper code within the Mheg-5 software that you can not see on the EPG. When the broadcaster (not Freeview) enters the program into the EPG, they enter in a Program ID and a Series ID. These are what the PVR looks at when you are booking a program. Unfortunately, often (but not always) each "series" of a show will have a different ID, and so the PVR books the current series you asked for, but will not 'notice' the new series that comes out later. Freeview is looking at fixing this with a complete Show ID, but there are issues with this.
With older TV series like Friends, that get repeated often, this would mean that the PVR would record all shows, even ones you have seen before. Would this be an issue? Would you be annoyed if you come home from holiday and you had loads of old series on your PVR? Or would it annoy you more to find you had missed the first 3 episodes of your favorite series?
Perhaps if we comment on it here, we can give Freeview something to work with.
Mac