Here's a list of News Corps full holdings:
http://en.wikipedia.org/wiki/List_of_assets_owned_by_News_Corporation
It's pretty extensive! NOTW was a drop in the bucket.
If there is any difference in how the company acts in the UK, I suppose it would be its political influence. News Corp was in bed with the Torries big time this election cycle.
However. I worry more about what they do in the US with Fox News. It's helping to dumb-down a whole nation.
I'm not saying Murdoch is beyond reproach... the type of journalism he has endorsed in his US and UK properties is appalling (except the Wall St Journal, which hasn't yet been ruined since the takeover). I'm just saying he can't be blamed for not being versed in the minutiae or for the actions of editorial staff in a group that large.