I have my TiVo set up so that Sky channel 101 still points to the old callsign of just "BBC1" in channels I receive. The callsign for the aerial version in my area is "BBC1EAST" (or something like that) and it is also selected in channels I receive. This allows me to set up season passes and one off recordings from the aerial and be able to watch Sky at the same time (handy for the footy!). Because the callsigns are different it doesn't try to record from Sky. Hope this helps.