There was an announcement this morning at Christ's Hospital along the
lines of Due to possible delays and cancellations due to the inclement
weather FCC tickets would be accepted by Southern and vice versa.

I had always assummed that my Southern Issued Season (Amberley -
Isleworth) was also valid on FCC (I used one last night to get me from
East Croydon to Three Bridges).

Is it the case that unless tickets say Southern Only or somesuch (mine
just says Via "Not London" they are valid on FCC also? (I have made
the same assumption about other Southern issued tickets in the past.
As far as I can recall i've never been gripped on an FCC, or if so
very rarely and without comment.