Does anybody know of a site that can do an historic analysis of flights leaving from Beiging on the same day as BA38? We could be fairly sure that many would have been refueled with the same batch of fuel. Where did they leave to? I would be surprised if there were not some flights that flew flight paths to destinations somewhat colder than UK. The fact that they obviously did not all crash would not rule anything in or out, but such data that can be gleaned from the departing flights might add a little to the overall picture.
I've looked at the Beiging airport site, but it contains no historical data.