As others have mentioned, it is possible this is all misdirection. IIRC, satoshi's posts were consistent with him living in the US, on the east coast, or having a similar sleep schedule as someone who lives there.
Both the east coast and west coast make more sense to me than England. I just can't imagine that someone works throughout the night, rests for a few hours during the day, and continues his work from 13:00/14:00 and until early morning. Seems like a very unhealthy lifestyle.
Why are you ruling out the west coast? is it because if he was located there, he would have started working at 06:00 in the morning on average?