This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.

The UK breeding population estimate comprised 50,750 male Eurasian Woodcocks (95% CI: 42,935–59,251) in Britain and 937 males (95% CI: 274–1714) in Northern Ireland. The British population has continued to decline since 2013. To produce UK, British and regional estimates of breeding population size for Eurasian Woodcocks, and to assess the population change since 2003. The 2023 Breeding Woodcock Survey enlisted volunteer surveyors to count birds across a stratified sample of 1230 squares in England, Scotland, Wales, and Northern Ireland. The established ‘roding count’ methodology consists of up to three dusk visits, each lasting 75 min, during May and/or June. The results were used to calculate presence and mean density across 48 strata based on wooded area and regions, and extrapolated to produce regional and national estimates of population size. The population in Britain in 2023 was estimated at 50,750 male Woodcocks (95 CI: 42,935–59,251), representing an 8% decline since 2013, and a 35% decline since 2003. Despite small population increases in Wales and England since 2013, the continuing decline was driven by a 49.5% reduction in the population estimate for North Scotland. In 2023, Northern Ireland’s breeding population of Eurasian Woodcocks was estimated at 937 males (95% CI: 274–1714), which is the first estimate produced using this species-specific method. Nationally, populations of Eurasian Woodcocks continue to decline, but the 2013–2023 declines were not as severe as those recorded between 2003 and 2013. The diverging population trends between North Scotland and the rest of Britain raise questions regarding regional variation in habitat suitability/availability and factors influencing overwinter survival. Recommendations are made for future versions of the Breeding Woodcock Survey regarding the composition of the random sample of squares, the treatment of incomplete data, and the sampling of non-woodland habitat.

A population viability analysis of the North Norfolk Sandwich tern (Sterna sandvicensis) population was undertaken by Centrica Renewables at the request of Natural England, to understand potential impacts of estimated collision at Centrica’s Docking Shoal and Race Bank proposed offshore wind farms in the Greater Wash, with a third consented site, Sheringham Shoal (SCIRA) included in background mortality. The model developed specifically for the purpose, ViaPop, is an individual-based model with the potential to understand the relative effects of different population parameters (ie sensitivity analysis) at greater depth and sophistication than an off-the-shelf package. Population parameters were determined directly from the data on the relatively well-studied north Norfolk colonies coupled with estimates of some parameters from the literature, with estimates of survival rate determined by a specific analysis of British Trust for Ornithology ring recovery data. A project board of experts in the field approved the use of the different parameters used in ViaPop. The analysis was presented as suplementary information to the environmental statement.

The figures in brackets show the vital rates used in the population models.

Vital rates used in population matrix models for Myotis nattereri.

Elasticities and sensitivities derived from the population projection matrices for female Myotis nattereri.

Elasticities and sensitivities for the constituents of productivity derived from the population projection matrices for female Myotis nattereri.

PLEASE NOTE: Following the consultation on the proposal to stop producing this report, it has been confirmed that this report will continue to be produced by NHS Digital albeit in a revised format and on a monthly basis. Quarterly publications in January, April, July and October will include Lower Layer Super Output Area (LSOA) populations and a topic of interest. Data are extracted each month as a snapshot in time from the GP Payments system maintained by NHS Digital. This release is an accurate snapshot as at 1 May 2017. Since April 2014, geographical references have been taken from 2011 census information. GP Practice; Clinical Commissioning Group (CCG); NHS England Region and NHS England Commissioning Region level data are released in single year of age (SYOA) and 5-year age bands, both of which finish at 95+, split by gender. Additional guidance has been included in this publication to show how the new datasets can be used. New Health Geography structure: Please note that this publication reflects NHS England's health geography structure as at 1 April 2017. This includes the move of 32 practices from NHS Cumbria CCG (01H) to NHS Lancashire North CCG (01K). In addition, NHS Lancashire North CCG is changing its name to NHS Morecambe Bay CCG (01K) and NHS Cumbria CCG to NHS North Cumbria CCG although the CCG codes will remain the same. Roundwell Medical Centre (D82023) GP practice is changing its CCG parent from NHS South Norfolk CCG (06Y) to NHS Norwich CCG (06W). NHS Central Manchester (00W), NHS North Manchester (01M) and NHS South Manchester (01N) combined to form NHS Manchester CCG with a new code of 14L. UPDATED 17 November 2017 These ONS CCG codes have been updated to reflect changes that took place on 1 April 2017 (No data have been affected) NHS North Cumbria E38000041 to E38000215 NHS Morecambe Bay CCG E38000093 to E38000216 NHS Norwich CCG E38000131 to E38000218 NHS South Norfolk CCG E38000159 to E38000219