Yea, I saw this on the news this morning.
I actually photographed a wedding in the Barn late last year. Beautiful space and I bet there are many many couples who are going to be in big trouble looking for other wedding venues right now!
Another venue I photographed last year, Peckforton Castle, was partially burned down by a Groom (during his own wedding!) over a bill dispute. He is currently behind bars for it. I'm not saying that is the case here, but people do really really stupid things some times!
Edit - Link with some pictures...
http://www.itv.com/news/anglia/2012-06-13/arrests-made-following-chilford-hall-blaze/Cheers
Cris