Before the digital switchover, I used to transmit my TV ariel & sky signal via RFOut2 connection, up to my TV in my bedroom. I could then tune one of the channels to receive the Sky picture being displayed downstairs. Since the move to digital however, even though my digibox in my bedroom receives the TV ariel signal and I can watch digital tv, the Sky signal no longer works on the channel on my TV anymore.
Anyone know why this is?

You have to switch to the remote TV's analogue tuner to find the sky box output. It will be the only analogue channel you have left.

Make sure that you're tuning for analogue and not digital channels on the bedroom TV.
The Sky RF outut is analogue only.
Check with the TV user manual for tuning procedures - there is usually a button on the remote control marked A/D (Analogue/Digital) or similar.
Otherwise nothing has changed - if it worked before it should work now

I think I know what the problem is now. I think I need to run an additional RF cable from my digibox to my tv, in addition to the scart lead.

Well that will certainly explain why the TV couldn't see any signal

When you say "to your TV, do you mean the remote TV or the one the Sky box is connected to?

As others have said the analogue switch off won't effect the Sky "channel" on the remote TV.
For e.g in the kitchen the TV "sees" the Sky box on channel 6 but we have to have the TV on AV1 to see the freeview STB channels.

Yes, I mean to the remote TV.

You must have had the RF cable in place prior to DSO. Did you remove it?

I suspect the lead from the Sky box may have been plugged direct to the TV originally. Then a Freeview box was acquired and the aerial cable unplugged from the TV and plugged into the Freeview box and no link lead run from box to TV

Makes sense.

Exactly