BBC and ITV are only available on a big dish (1.4 extreme minimum, 1.8 better, 2.4 best)
these signals are direct from the Astra 2 and Eurobord satellites.
If you receive bbc and itv on a dish smaller than those mentioned above they are rebroadcasting.
if you receive bbc and itv on any other satellites other than Astra 2D they are rebroadcasting.
if you receive bbc and itv by paying a monthly subscription they are rebroadcasting.
you can try one of the "online streaming sites", or a services like http://www.vpnuk.info/
obviously you will never beat the quality of picture and sound of a TV from the main satellites.