I like them Martin, strong ideas here. All the consistency is great.
I especially like the examples of BBC One and BBC Two with colour involved. the BBC Two logo would look great on screen "flipping" between the text and classic "2" numeral you've shown at the top. In fact that might be a good idea for all of them, developing a "numeral" in a box which somehow changes to/from the traditional logo.
The only thing I'd mention is the region names outside of the box. Would probably keep them in a box under / next to the logo?
Unlike others on this forum I don't think you NEED to focus on anything more than what YOU want to focus on, so if you want to just do logos, just do logos. Too many people on here don't judge mocks on their own merit, instead expecting them to be something more or part of a bigger package.
These are technically sound, very well executed ideas. I give them a 4/5.
Keep it up, always nice to see you mocking