{"geometry":{"type":"MultiPolygon","coordinates":[[[[-0.461678,51.573257],[-0.461609,51.573028],[-0.461254,51.572709],[-0.46068,51.572074],[-0.460153,51.571372],[-0.460175,51.571182],[-0.460157,51.57082],[-0.460064,51.570419],[-0.459891,51.570112],[-0.459368,51.570201],[-0.459129,51.570064],[-0.458099,51.569803],[-0.457813,51.570142],[-0.457656,51.570273],[-0.457574,51.570424],[-0.457228,51.570724],[-0.45699,51.570978],[-0.456769,51.571194],[-0.456609,51.571421],[-0.456294,51.571702],[-0.456068,51.572051],[-0.455792,51.572533],[-0.455379,51.573013],[-0.455003,51.573284],[-0.457189,51.573693],[-0.458542,51.573854],[-0.458545,51.573768],[-0.461678,51.573257]]]]},"type":"Feature","properties":{"entry-date":"2025-11-21","start-date":"","end-date":"","entity":40695,"name":"This moated site is one of the five SAMs currently designated within the London Borough of Hillingdon (NHL 1005555). Brackenbury Manor was traditionally part of Harefield. A house was first mentioned in 1312. By 1558 it was no longer considered a separa","dataset":"archaeological-priority-area","typology":"geography","reference":"76357","prefix":"archaeological-priority-area","organisation-entity":"16","quality":"authoritative","archaeological-risk-tier":"Archaeological Priority Area"}}