Re: Freeview without an aerial....possible?
You *may* be able to get a Freeview signal with a portable aerial but, unless you have a reasonably clear view of Winter Hill from your bedroom, I'd suggest this is unlikely.
Instead, why not run a cable from the RF2 output of your Sky box up to your bedroom. This will allow you to watch the same Sky channel as your main TV or, if you have an external aerial connected to it, any of the terrestrial analogue channels. If this is a good aerial then you may be able to receive the Freeview channels too.