I think Horizon has become very dumbed down over the years (or perhaps it always was?) it wasn't a particularly informative programme, but I wanted to put in a good word for Rozina Ali - she is a lovely person, and I know a lot of people who have her as their surgeon and think very highly of her too.
The programme is up for criticism and everyone is totally entitled to comment of course, and to find her irritating as a presenter if that is how they feel. I think comments about her appearance are a bit unfair, - she looks as she looks, she's a glamorous elegant woman IMO, - but still displayed the usual insecurities about being seen without her make-up I thought.
Of course it's very subjective trying to guess how old people are - I was surprised to learn she was 44, - having seen her in RL I would have guessed much younger.
I have heard her lecture on plastic surgery for cancer patients (for a charity that I belong to), and she was very informative, expert and an excellent speaker, - so I think the programme definitely didn't do her justice if people have gained the impression she is somehow a light weight scientifically speaking.
It's interesting to hear what others made of the programme though - obviously I'm coming from a slightly different viewpoint, and not necessarily and objective one, - but it all adds to the debate 
Maybe she'll give me a free jar of the wonder cream next time I see her, - I certainly don't look 34 