Which TV buildings should be listed?

Sadly the Westward/TSW building has been lost forever inside according to a friend of mine who worked for both companies- generally the whole building is shot- yes his solictors are Foot and Bowden now. Much like the Civic Centre in Plymouth which (god willing as I have the misfortune to work in this Grade 2 listed heap of 1960's s***e) means they are both going for the new development of the western part of Plymouth City Centre linking Millbay and Stonehouse to City Centre

Sorry to say, but the iconic mast on top of Granada TV's main tower in Quay St Manchester is due for dismantling next week due to structural problems.
The mast has not actually been used for a few years now due to the regional news' use of the satelite UPODs for beaming stories back to Quay St.

I firmly, 100% definitely believe that Culverhouse Cross should be preserved forever.
The inside has some classic 1980s decor that was very much a product of its time and is DEFINITELY worth preserving forever.
I find the inside of that building quite fascinating in all sorts of ways. It MUST be preserved!

Speaking of which, Emley Moor Tower was declared a Grade II listed structure a short while ago, for its "architectual importance". Sort of a TV building!