Wybourn First & Middle Schools are first depicted on the 1935 25 inch OS map and was most likely built at the same time as the estate to service it. Prior to the building of the school, the site consisted of fields probably enclosed in a piecemeal fashion from Sheffield Park. The whole polygon occupies the northern part of a field shown from the Fairbanks 1795 plan until the 1923 OS map. Manor Oaks Road forms the northern edge of the polygon. This is shown as a field boundary/ track on the earlier maps. The east and west limits of the polygon mark the east and west line of the field boundary. Legibility is fragmentary due to this.