to get bbc or itv you will need a biger dish.
bbc and itv (and a few 100 more) are free to air to channels.
for the last few years (about 6 in the bbcs case) they have not been part of any sky subscription package.
paying sky a monthly subscription will not get bbc or itv
there is only one set of signals for bbc and itv - not seperate fee and pay signals.
they only way the bbc and itv are linked to sky is that they are on the sky receivers Sky Guide.
not too sure what the reference to sky news is. even if you meant bbc news. you should even be able to get sky and bbc news on a 60cm dish!! why? because they are on a different satellite which has a much stronge signal that the satellite BBC and ITV are on.