On the way to the Shuttleworth Collection from the M1 southbound, you (should, taking the fastest route) pass the enormous Cardington air sheds, visible from miles around. The oldest looking shed (Hangar One) was completed in 1917, with the more modern one (which has been re-cladded) completed in 1928. Each hangar is 247 metres long and 59 metres tall.
Hangar One was home to the post-WW1 R101 airship which crashed in France killing all on board. Nowadays, it's home to a company still making lighter than air vehicles, although nowhere near the size the shed was built to hold. Hangar Two is used for filmwork, including scenes from Batman Begins (and presumably the new one, Dark Knight, as well)
Apologies for the bad shots, the ones of Hangar One were taken from a moving car (I wasn't driving, i'd like to add!)
Hangar Two
Hangar One