So at about 6AM s'morning I had woken half up when suddenly the door was knocked. I thought "Nah", lay there for about 5 minutes then gave up and got up. I opened the door, no sign of anyone. So I 'buzzed' for help, said "Who knocked my door so early?" and he said "No one, I was out having a fag and I know there was no one. But the roof makes a knocking sound, might have been that?" pointing at the roof outside. Dunno but I was up very early today