The earth has been moving...

..it seems, in Kent. The BBC reports that Paul Smye-Rumsby, who lives in Dover, said: "It was about 08.15 when suddenly the bed shook violently.

"I thought my wife had got cramp or something but then I saw the curtains were moving and the whole house was shaking. It lasted about 1.5 seconds."

Just how do people deal with cramp?