Harmondsworth Village in west London was designated a conservationarea in 1970 but the open countryside famed for being a medieval settlement could lose its character because of the expansion of Heathrow Airport, according to English Heritage.
"This was a very tall structure, bigger than Big Ben, in open countryside against the Chiltern Hills, an area of outstanding natural beauty, surrounded by small villages and conservation areas with a lot of cultural heritage and listed buildings, " he said.