NHER 54474 (Monument) - World War Two Anderson-type air raid shelters in central Norwich and environs (Ordnance Survey quarter sheet TG10NE)

June 2010. Norfolk NMP.
Small, Anderson or similar types of World War Two air raid shelters are visible as extant structures and earthworks on low-level vertical aerial photographs taken by the RAF in 1945. Those recorded here fall within the Ordnance Survey 1:10,000 quarter sheet TG10NE, covering central and northern Norwich as well as the margins of neighbouring parishes such as Cringleford, Colney and Costessey. They have been recorded as point data only, for the most part plotted by eye onto the modern Ordnance Survey MasterMap or 1:2500 LandLine map base; their location therefore should be regarded as approximate.
Due to restrictions on time, it was only possible to conduct the thorough viewing required to identify all such shelters on a random proportion of the available aerial photographs. The NMP mapping of such features in this area should therefore be regarded as both schematic and non-comprehensive; it would in any case only represent those shelters visible and identifiable on the aerial photographs, in itself a proportion of those that presumably once existed.
Across the quarter sheet, a total of 74 such shelters have been identified from the photographs that have been thoroughly checked (S1)-(S5); the individual frames on which each shelter is visible are recorded as Object/Attribute Data within the mapping. Although the selection of photographs used was largely random, there are clear clusterings of such shelters in certain residential areas of the city, in particular Costessey.
E. Bales (NMP), June 2010.

February 2021. National Mapping Programme (NMP) Data Clean-Up.
Thirteen of the probable Second World War Anderson-type air raid shelters described above were duplicated in the air photo-derived mapping for Ordnance Survey quarter sheet TG20NW (see NHER 53668). They have been deleted from the mapping associated with this record (ie NHER 54474).
S. Tremlett (Norfolk County Council, Historic Environment Service), 9 February 2021.