These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Harsher in Hindsight: The scene with James saying that his first ever girlfriend, when they were both pre-pubescent, ended when she left him for Gary Glitter is painful to hear now that Glitter has been exposed as a sexual abuser of young girls.
Idiot Plot: So much trouble could have been avoided if James Hamilton had thought to say to Helen Quilley on their first date "Oh, by the way I'm separated from my first wife and we're getting a divorce, but don't worry, it's all amicable".
Narm: Lydia leaving Gerry in one of the timelines: "It's over! Again!"