Call me thick right, but, up until 2-3 days ago I had no problem receiving any of the channels.....ok in a storm ITV used to go a bit wanky, but I never lost anything.
I know that something has happened with the Beeb and Sky and the Beeb have moved something up there in the heavens but, if I was already pointing at 2d (which I presume I am as I receive C5 C4 ITV etc), why have the BBC channels (no others) decided to “do one” in the evenings?
The only thing that has changed is BBc going to 2D, some transponders on 2D are stronger than others. Channel 4 an 5 are not on 2D, see this page for where everything is http://www.lyngsat.com/dig/skyuk.shtml
The reason that the BBC is going is that the footprint on 2D is much tighter as per the map above and with power saving and re-orientation you will lose it with your small dish at certain times, there are many posts cocerning this.