I liked it but didn't love it. I really liked the beginning with the different choirs for the four parts of GB, Kenneth Branagh reading from The Tempest, and the change from the pastoral scene to the smokestacks of the industrial revolution. I also liked the Bond/Queen segment (corgis!), Mr Bean and the lighting of the cauldron. The music from different decades section went on too long and I felt like they spent a disproportionate amount of time on the 60s/70s; I liked the social media aspect and the main girl was very pretty. The NHS/children's literature section was better in theory than practice for me. I also found it weird they had a remembrance for spectators' loved ones that had passed on, especially when they refused to have a moment's silence for the Israeli athletes murdered 40 years ago (as the latter is directly connected with the Olympics and the former is not).
On with the Games!