Mooncrest, yes apologies it is a slightly ambiguous post. The picture is, as P160 says, the BA base on the east side of EGLL. The 'CC 264 was originally sited NW of the R/W 20 threshold, about where the cargo sheds are now. By 1979, it had moved to where you say, roughly where the MCT DVOR is sited today. There was a rumour that the EGLL 264 aerial from the BA car-park was used to replace the one at Manch', but I don't know whether that is true.