With regard to this posting I've just seen, on a FB group, the attached poster which is on display at Lancaster. Without retyping the whole lengthy thing, it seems to suggest issues (potentially no service at all) between 11th-18th Dec (reduced service on 18th) and 1st-9th Jan (reduced service on 1st, normal on 2nd, reduced on 9th).
View attachment 124666
Where does it say that on the website, do you have a link?
Does it say what service that relates to ?