This is a close approximation to the Conservation Area. For an authoritative source, please refer to the one at the LBH website.

(Update 15 Dec 2017) This interactive map from LBH shows conservation areas and tree preservation order areas. Type Swakeleys House into the search box, close the Legend box and you get a decent zoomable map of Ickenham conservation area and beyond.

Don’t bother clicking on this icon in the image below, it’s just a list of lines