What am I doing in this silly showbiz life? I do wonder that sometimes.

I play the guitar. This year at the Sundance film festival, I joined the band from 'The Guitar' on stage. We warmed up for Patti Smith, and then the director Michel Gondry got on the drums to play some songs from the soundtrack to his film Be Kind Rewind with Mos Def. It was pretty mad.

Part of me misses the days when we have four channels in England and we were all talking about everything all the time.

I grew up in a strongly socialist family. While I was at school, I worked in party politics and with organizations like the Anti-Nazi League. Everywhere I saw it, I fought prejudice.

Location work has its charms, and can seem glamorous on the outside, but I think living at home and having the stability of a home life once you've finished work is very underrated!

In orthodox film-making, you never shoot sequentially - but with improv, obviously every move you make has a knock-on effect; it is a cumulative process. I have improvised, on the non-scripted 'Timecode.' It can become entirely indulgent: actors smashing crockery and competing verbally.

I'll always take Scrabble and chess if I'm going filming. But I do have the Scrabble dictionary, which can be infuriating for other players.