Politicians are supposed to have a survival instinct. Mine didn’t kick in last week, so I had no idea that my evidence session to a House of Lords committee on Wednesday would be my swan song. I was speaking about the work of the Ministry of Justice, where I had been lord chancellor for two years. The work, I said, is more than a series of desiccated processes. It is, and should always be, rooted in the rule of law, fairness and equality. With that off my chest, I rushed to Prime Minister’s Questions. In the middle of it, I received a text message saying that the Prime Minister wished to see me. By 2 p.m., my time in the cabinet was over and I was leaving government. In my meeting with the PM, I didn’t follow the example of my predecessor Lord Kilmuir, who when dismissed told Harold Macmillan that a cook wouldn’t be treated in that way.