Please look carefully just to the upper left of center. You may need to view the picture in Large mode. I am 99% sure that is a BA Concorde sitting there. I was under the impression that the Concorde was going to be in a public viewing area at LHR. A few meters from what looks like an active runway (is that Rwy 22??) sure doesnt seem like a public area? Was this picture really taken on July 4th or is it an older photo and the Concorde has since been moved?
"I never apologize! I am sorry, but that's the way it is!" - Homer Simpson
You might also be interested to know that Concorde is not addressed as "the" or "a", as it is a proper noun. (Using an article for Concorde is the same as saying, "I spoke to the Joe who told me that the Jane is getting married to the Adam." )