'lo all! lovely to see someone else is watching this as it seems to have passed by most people I know!
I tuned into this with no preconceptions and have enjoyed it so far. It probably helps that I like quite a few of the actors - e.g. Wishaw was amazing in Perfume, Anna Chancellor is a stalwart and Burn Gorman does conflicted/baddie so well ...
What I have done is look at the BBC microsite and that sheds a little light on some of the characters. You could say it shouldn't be necessary to do so - we should gain enough information through the script - but perhaps I may have missed some key nuggets? Anyway, Hector's wife is very much new money according to her bio, so imho she is trying to act all old money and cool about everything, including her husband's infidelity. The way she reacted to the lipstick behind Hector's ear indicated that it probably isn't the first time he has played away and she recognised that there was an attraction with Bel at quite an early stage, hence the bitchy comments and trying to ascertain whether Bel and Freddie were an item.
And I have quite liked Freddie, actually. He is a working-class, grammar school boy done good in an organisation that at that point was still very much the preserve of a public school/oxbridge elite. He also was exposed to this upper class world at an earlier, impressionable age because of the Elms - but was held at arm's length and ultimately pushed away from it. Consequently he knows that nomatter how brilliant he is, nomatter how close he gets to these people, he is always an outsider looking in - hence the self-protective veneer of chippiness and indifference. The jumping on the bed thing I saw as him literally stamping on this symbol of affluence, messing it up. But it's fair to say there is also an element of arrested development about Freddie - and actually he wouldn't be the first journalist I've come across with that type of personality.
What HAS bugged me is Bel herself. There are many women who are quite feminine in the workplace, but you know they have an iron rod up their spine that has helped them achieve career success. Bel just seems so drippy and nervous so much of the time it makes her less believeable - whether that is down to direction or acting I'm not sure. For example, when she was fumbling with her fingers in the meeting with the government minister it just seemed so weak. I just don't think that character would have let herself give away a "tell" like that. I believe her more when she is in the loo going "oh crap" and then composes herself, comes out and starts calling the shots.
Oh and for what it's worth, i think it's quite possible duckface is brightstone.