Sky or Freesat should still give multiple channels and not just the few mentioned hence the "who's installed the dish question"
...but as the OP's mentioned the paramount channel then more likely to be SKY.
---------- Post added at 21:50 ---------- Previous post was at 21:49 ----------
One of the things I like about my DGstation digi receiver, I can just scan the channels and tell it to bypass any encrypted ones