Being a grandparent is whole new phase in your life.

With something like cancer, there is a feeling that you can fight it in some way or control your response to it, but with dementia there is the fear of losing control of your mind and your life.

With your own children, you love them immediately - and with grandchildren, it's exactly the same.

When you get to the end of a TV series, you feel totally out of sorts as an actor. You feel unfit; your voice box has collapsed on you because you've spent all day muttering into a microphone that's two inches from your head, and you feel desperate to spread your wings and do a bit of real thesping.

You get pigeonholed. Some people are film stars, and some are theatre stars who do one-off telly. Somehow, I get into long-running series.

With all the lines I have to learn for TV scripts, I don't think I have any problems with forgetfulness - that's brain exercise enough for me.