The Initiative sets from season four were particularly impressive. Tell us about designing them.

We did the huge exterior up at the Lockheed complex. It had a very large stage with a huge pit in it and we lined the interior of the pit with Mylar, and made it look sort of space age. That was supposed to be a huge underground facility where the Initiative were based.

Another set I was very proud of that was part of that complex was a secret laboratory off of the Initiative base, sort of an underground bunker where Adam the robot took all his operations into.

That set was actually created out of an old church set that we had. The church had these Gothic arches in it that I continued around and made look like the inside of an engine or something.

It was all concrete and had a very large lighting apparatus that went down through the whole centre so it was a really interesting and very visual set and we were able to create it quickly for one episode.