complementing existing local searchlight batteries). A typical installation of this type comprised a small ring ditch (providing operators with some shelter during an air raid, a predictor emplacement (for calculating the height/range of aircraft), a light anti-aircraft machine gun pit, a generator and hutted accommodation for the crew. This site is included in the English Heritage Archive (Number: SE 82 SE 62, Monument Number: 1500984). A heavy anti-aircraft battery. It was located just south of West Halton Lane (near Southdale Farm), at , and was listed as 'unarmed' in 1942. This site is included in the English Heritage Archive (Number: SE 82 SE 60, Monument Number: 1473341). Governance Lying within the historic county boundaries of Lincolnshire for centuries, from a very early time, Alkborough formed part of the Manley Wapentake in the North division of Lindsey. Care for the poor of the parish extends back prior to 1765, though after the Poor Law reforms of 1834, Alkborough became part of the Glanford Brigg Poor Law Union. From 1894 until 1974, Alkborough lay within Glanford Brigg Rural District. Population history (1801–2001) The population history of the area is reported as the following, transcribed from North Lincolnshire Council website. Conservation Area The older part of Alkborough, including Julian's Bower, Countess Close, and Walcot, lies within a Conservation Area. Geography Alkborough is situated on an escarpment formed of Triassic Mudstone, known as The Cliff, which runs roughly north–south. The steep mudstone escarpment is to the west, with a shallow slope to the east formed from shale of the Lower Lias in the Jurassic system. Alkborough Flats Alkborough Flats is an area of low-lying arable farmland of nearly situated at the "Confluence of the Rivers" (Trent Falls) where the Rivers Trent and Ouse join to form the Humber Estuary. The alluvial plain is now jointly owned by the UK's Environment Agency and English Nature. Flood defences, which were built in the 1950s to protect the area, have been breached to allow water to reclaim the land at high tide and in times of flooding. The project created of new intertidal habitat in the inner part of the Humber Estuary. The new grassland will be managed to encourage biodiversity, with reedbeds, lagoons and grazing areas. Alkborough Flats is the first coastal realignment site to be developed as part of the Humber Shoreline Management Plan. This "managed retreat" strategy should lessen the risks of flooding in