I chose Robert because it’s one of my favourite men’s names, because Robert F Kennedy is my hero and because, mercifully, I hadn’t used it for any of the characters in the Potter series or The Casual Vacancy.

Galbraith came about for a slightly odd reason. When I was a child, I really wanted to be called ‘Ella Galbraith’, and I’ve no idea why. I don’t even know how I knew that the surname existed, because I can’t remember ever meeting anyone with it. Be that as it may, the name had a fascination for me. I actually considered calling myself L A Galbraith for the Strike series, but for fairly obvious reasons decided that initials were a bad idea.

Odder still, there was a well-known economist called J K Galbraith, something I only remembered by the time it was far too late. I was completely paranoid that people might take this as a clue and land at my real identity, but thankfully nobody was looking that deeply at the author’s name.