Amelia went to London yesterday, accompanying her friend to Great Ormand Street Children’s Hospital.

So, I was stuck at home with Harry. Now, he’s a doddle to look after. Left to his own devices he’ll just spend the whole day on his X-Box.

Which is not a good thing.

So, I asked what he’d like to do and we ended up going to the pictures to see the latest Disney animation, Wreck-It Ralph.

We arrived just in time, as the lights were going down. It was quite busy in there and we had to squeeze our way past some people to get a seat.

Sitting there, munching from his kid’s box of popcorn and chocolate buttons and laughing at the on-screen antics, Harry was thoroughly enjoying himself.

I enjoyed the film too, clever and amusing, with humour on several levels and some of it obviously aimed at adults. But I also got a lot of enjoyment just from watching Harry, who was constantly smiling and was utterly absorbed in the film.

Then, about an hour into it, we all had to stand as a woman and her two young daughters squeezed their way down the row to take the seats on the other side of Harry.  It seemed strange that they had come in this late, when the film was approaching its conclusion.

Half an hour later, it was over and the lights came up. I looked over, past Harry, to see the late-comers. They were sitting there watching the credits, wearing 3D glasses.

I reached over and tapped the lady on the arm. “I think you’re in the wrong screen,” I said, “the 3D showing is in screen 4. This is screen 8.”

She took the glasses off. “I wondered why no-one else was wearing them”, she said.