Thanks John(from Arran). Seems like a good idea to me! Many thanks also to all who wished me well on previous threads.
This RT crossword was relatively straight forward.
Having read the thread, I would agree that the now standard inclusion of 1 or 2 clues to find the names of media personalities, some from American TV series, can be a challenge for those of us that watch little or no television. I usually find myself asking my teenage children for guidance!
12A was not a good clue - much prefer the alternative from John(from Arran). I would also agree that "the" in 6D is not really needed.
Thought that the use of chemical symbols allowed the compiler more "width" in the wording of some clues.
Did think that 7A and particularly 4D were good clues!