Can we expect Brooks's alcohol problems to resurface in series two?
BW: "It's always there - that's the thing. You'll get hints of that all the time. I had to speak to alcoholics about this. Even halfway through an episode, one of the characters will say a quip and you're told as an actor to let that trigger something. Consequently, he's always fighting it."
Will he go off the rails again?
BW: "Who knows? Hopefully! I guess that must be pretty easy. I wouldn't want to be in that situation. Imagine after Christmas saying you won't drink for a month.. after that time, you're gasping for a beer. Alcoholics are like that all the time. Funnily enough, the thing I learnt about alcoholics is it's not the alcohol they crave - it's the sugar. That's why Ronnie always has jelly beans! I ended up putting up a stone and a half for the role!"
Which guest stars do you have lined up for series two?
BW: "We've just had Rupert Graves come and visit us for an episode in the second series. I'm sitting in a room with people like Harriet Walter and Juliet Stevenson and it's great for me. I'm a baby at the acting game!"
You've already started filming on the third series. How does this one differ from the previous?
JB: "We're all that much more experienced and savvy about what works on the show and what doesn't. Even though we've inherited something as tried and tested as Law & Order, we made mistakes last year - Bradley and I, for example, shot a scene in a car which was just us talking. It was great and I would happily stick it on my show-reel, but it has nothing to do with the plot and the case we're doing. What you learn about this show is the faster it moves and the shorter the scenes, the better it works. The less it's about Brad and I, or Freema and Ben, the show works."
How do you think our version compares to the US one?
JB: "We're mellowing down a very muscular show that Dick Wolf first created - it's much more British and we've got an ITV audience in mind. It's navigating the waters between a very dry, procedural show, and getting to know the central characters."
Do you see L&O: UK as a spinoff from the American version, or do you think we hold our own?
JB: "This is a format, so if you turn your back on that, it's just another generic cop show. For me, we live and die by sticking to what works, and what works is the American show. Criminal Intent and Special Victims Unit are spinoffs, but we're not doing that - we're doing Law & Order."
What do you think to a possible US-UK crossover?
BW: "That has been mooted quite a few times. Dick Wolf himself has spoke a few times about it. We were at the Monte Carlo festival last year and he talked about it then. He's desperate for it! We'd meet Epatha and Sam Waterston, and I'd hook up with Linus Roache, because of course I worked with his dad Bill on Coronation Street. A crossover would be wonderful."
Law & Order: UK returns to ITV1 for its second series Monday, January 11. The first series is out on DVD the same day.