A small dark craft of somekind passed about 30 metres directly over my head, shortly followed by another.I was walking home on a reasonably clear night after watching a game of rugby videoed earlier on that day. It was about 1.30am and the road I was walking down wasn't very well lit up, as it was cold and a bit of mist was about due to the temperature. There was no-one else on the road and all was quiet. I heard a faint swishing noise and looked around to try and locate where it was coming from. As I looked about, I happened to look directly above me and saw a very dark object alarmingly low (25-30 metres) moving horizontally over me. It was really quiet and seemed to have a non-moving centre piece, and on each side of this were these semi-circular wing type objects which were turning end over end (a bit like a paddle steamer cylinder) It made very little noise, like something flapping in the wind. There were no lights that I could see, the only thing I can compare it to would be is a dark shadow. At first I just stopped walking and tryed to keep an eye on it, but the object was so dark I lost sight of it within 10 seconds or so. I stood there for about half a miniute and tryed to figure out what I had just observed I said to myself "That's some freaky shit right there!!" and carryed on walking. Trying to understand wether or not I had just seen what I thought I had seen, a second identical object passed again directly overhead, or maybe it was the same object that had done a full circle and came back for another look. The object was not very large, possibly 15-20 metres from wingtip to wingtip, and about10 metres wide in the middle. This is the first time I have told anyone about this for fear of looking like a nutcase, but it has been preying on my mind ever since it occured. I am a 29 year old computer graphics student and I swear on my life that this happened as I am relating it to you.I also swear I was not under the influence of alcohol or drugs at the time of the incident. I hope you find this to be of use or interest to you. Yours Very Truly, ((initials deleted))