Bronze Age

After the Neolithic, apart from a small number of Early Bronze Age cremation burials towards the western end of ICSG, there was little evidence for activity until the Middle Bronze Age when an extensive field system was laid out across both sites. Such large-scale co-axial field systems are a features of many of the sites around Heathrow, as well as more widely in Britain. 
 
Although varying in size, the fields, defined by ditches, are all roughly rectangular in shape, and appear to be have been laid out in blocks. Towards the east, on both sites, the field have ditches running north–south and east–west, but further west the axes gradually shift in a very uniform way, suggesting a high degree of organisation.
 
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Most of the Middle Bronze Age Deverel–Rimbury pottery was found in features, such as ditches, pits and waterholes, in the south-eastern part of ICSG, indicating a settlement in this area. Nearby, and probably associated with the settlement, was a small cemetery containing up to 13 cremation burials, some of them deposited in urns. Another burial was made in the ditch of the Neolithic double ditched monument circular monument.
 
One of the waterholes within the field system contained a 1.65 metre long timber with three regular notches cut out of one side perhaps so that it could have been used as a ladder. It was radiocarbon dated to 1210–910 cal BC (Middle–Late Bronze Age).
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Elements of the field system remained in use during the Late Bronze Age (and possibly into the Early Iron Age), although by then the pattern of settlement appears to have expanded, with features of this period being found more widely across both sites. Although no houses were identified, there was clear evidence for domestic activity in the form of pottery, worked flint, animal bone, fired clay and hearth waste, and, in one pit, 16 cylindrical loomweights.
 
One large deep feature, probable a well, contained the base or lid of a wooden vessel which produced a radiocarbon date in the Late Bronze Age of 1110–900 cal BC.