I can go to the BBC and say, 'OK, my next drama is for women, and it is diverse women.' I take that to America, however, and I have another set of conversations.
Following the principle that you should know your enemy, the BBC has assiduously recorded the relentless rise of Rupert Murdoch and his assault on the old 'decadent' elites of Britain.
I'm working harder now than ever before. I couldn't turn down the BBC job because I've never been offered the opportunity of killing three or four people on screen before!
When I joined the 'Strictly Come Dancing' panel in 2009, the controller of the BBC came into my dressing room and said they were proud to have a woman of colour on their panel. It was so nice that they acknowledged it.
Of course 'Horizon' had made an impact on me from a young age, but it was also humbling to meet and interview eminent scientists, and hear their high opinion of the series and of the science presented on the BBC more generally.