Can we please talk about their reactions? Mummy Holmes keeps talking as if Sherlock stepping on furniture is nothing out of the ordinary, and Dad Holmes is so exasperated by it… his reaction reminds me a lot of… John.
Now, I know there are quite a lot of metas out there about the obvious parallels between Mr Holmes and John, but this is one of those scenes that made the similarity between them click in my head. The reason is that despite the fact that he looks a bit annoyed, in the next takes he seems to just accept what his son is doing, just like John reacts to what Sherlock’s actions.
Also, about Mummy Holmes, she’s a sweeter, more open version of what I suspect Sherlock will be like when he retires and goes to live in the country (at least from what he know thanks to acd canon). She’s the most talkative of the two, just like Sherlock, and constantly relies on the support of her husband as she speaks, as if he were her audience. We all know Sherlock and John have the same dynamic, so it really wouldn’t surprise me if at the end of the series we get a scene of the two of them like this: together, finishing each other’s sentences and basically talking about their day to day life.