The character [Maigret] is bound to change and develop, and I wouldn't like to claim that we are perfectly formed straight out of the box. I think it's what I'd call an 'optimistic start'. As you know, for me, no glass is anything other than half empty, so I apologise for my reticence in terms of promoting this programme.

[Georges] Simenon could be very brave like that. You never quite know what you're going to get or how the story's going to be told.

I'm more critical of the films I make than anyone else.

The good thing about those original credit card commercials was that they were very "filmic", they were like little movies, so it wasn't a big step to think well maybe we could make a big movie using this character, which we eventually did.

This is sort of inflection-free acting [playing Maigret], and I really wasn't sure if I could do it - you make your mind up on whether I've succeeded or not. But yes, I found it difficult when we were shooting; it was a couple of weeks before I settled into not worrying - to finding a way of delivering those lines - so my worries of many months before I think had been justified. I found it a difficult way of being.

Apart from the fact that your physical ability starts to decline, I also think someone in their fifties being childlike becomes a little sad. You've got to be careful.

ITV and the production company contacted me and asked if I fancied playing the role [of Maigret]. It took me a long time to decide to do it. In fact, I decided not to. I thought about it for some weeks, and thought 'perhaps not' and it went away for a while, and then it sort of came back. They said 'Are you sure you don't want to play him?', so I thought about it for a lot longer again, and eventually decided that I would.