Thanks for the comments guys. The Hangars or 'sheds' as is correct for Airships are just 10 mins or so from me. It's great to see them back in use for their intended purpose again. I've been in shed 1 and yes it is huge. Over 800 feet long. To put that in perspective Titanic would have only had about 70feet sticking out.
Shed 2 (nearest) is mostly used for filming. The 2 recent Star Wars films used them extensively and Gotham city was built inside for one of the Batman films.