I started (re) watching this thinking I would just dip into episode 1 but had forgotten enough to watch both series. Which was interesting as for whatever reason I had never seen the last 2 episodes. 
I found it more interesting than some of the current tv dramas that are now all so the samey, and superficial. Politics, media, criminals, cover ups and so on.
If you can get over the hugely inflated notion that news reporting is the saviour of the world it is quite interesting, and makes the 50s look very glamourous.
With Romola Garai, Ben Wishaw, Dominic West and many other big names including Anton Lesser.
And I always find Ben Wishaw really irritating (except when he is the voice of Paddingont), and Dominic West sort of type cast but very convincing.
Because it is UKTV (now known as U) there are ad breaks, but it seemed that the first ad break in each episode was quite long, but after that not to much of a break.
Just in case anyone is looking round for something to watch that is free.
https://u.co.uk/shows/the-hour/watch-online