Because Granada Media, Granada TV and Granada Sky Broadcasting are 3 different companies.
As to Reports - if it used the same logo as the channel, it might cause confusion and it certainly makes very little branding sense.
SU
SpiringUnhacked
I meant that the GSB logo is
exactly
the same as the G+ logo - a different colour like the old Men and Motors logo, or a different font like Breeze would make a totally different look!