If I get the chance I will be watching this, although I do have one or two reservations.
One of which is the fictional scene where Margaret Thatcher effectively propositions Ted Heath and gets rebuffed. I know the old tale that major rows, arguments, and feuds between a man and a woman, or even two gay people, is down to sexual tension, but it's not always the case and I have always had the impression that the Thatcher/Heath feud was down to ideology, being different people with different approaches to dealing with certain situations, plus (later on), the simple fact that Thatcher effectively kicked Heath out of the Conservative leadership.
Plus I don't think they were exactly each others type, but hey! What's to stop that in the way of good TV Drama, which leads one to ask why we are so dependent on sex to get our attention to what in any case would be a riveting story!