FYI - The aircraft is G-BNLU on flight BA269 - which I take it as being seeing as it is a sunset shot. This flight arrives around 7pm in LAX. Now go and update the photo! Source the LHR Yahoo list (Gives daily movement logs of incoming and departing a/c from LHR)
I know it sounds a bit silly to say this, but you've got a dust spot above the sun and number 4 engine, right near the top of the frame. You should probably reupload before people start complaining about how Sam Chui doesn't get baddirty rejections!