Felt it in Norfolk. I was woken, as was Mr Wafflycat. There was a low but loud rumbling, and the house shook for a second or so. Yes, heard the internal 'crack' of stuff moving. Poor Waffles refused to budge from my side for the rest of the night, but the two boycats were utterly unconcerned. I immediately put the TV news on, as I wondered if it was an earthquake or another Buncefield, as I was woken by that noise in 2005