What the figures for Sizewell cover
Every figure on this site comes from official or open public data. This page shows, for each one, the area it covers, the period, the source and when we last updated it.
Sizewell is part of the parish of Leiston.
Official statistics are published for parishes and census areas, not for every village and hamlet, so there are no separate figures for Sizewell. Property, crime, broadband, food hygiene, businesses and population are for all of Leiston parish (5,750 residents). Flood risk, planning, transport and weather are measured from Sizewell itself, and schools include the nearest to Sizewell.
Figure by figure
| Figure | Covers | Period | Source | Last updated |
|---|---|---|---|---|
| Population | Usual residents of the parish of Leiston | Census 2021 | ONS Census 2021 | 17 Oct 2026 |
| Property | Residential sales at postcodes in the parish of Leiston | 12 months to Jun 2026 | HM Land Registry Price Paid Data | 6 Aug 2026 |
| Crime | Crimes reported in the 4 neighbourhood areas (census LSOAs) covering the parish of Leiston; the rate is per 1,000 residents of those areas | 12 months to Jun 2026 | police.uk | 6 Aug 2026 |
| Broadband | Postcodes in the parish of Leiston | Speeds measured 2023, availability 2025 | Ofcom Connected Nations | 30 Sept 2026 |
| Schools | Open schools in the parish of Leiston, plus the nearest others within 5 km of Sizewell | Latest inspection for each school | DfE Get Information about Schools, Ofsted | 30 Sept 2026 |
| Food hygiene | Food businesses at postcodes in the parish of Leiston | Latest inspection for each business | Food Standards Agency | 6 Aug 2026 |
| Businesses | Active companies with their registered office in the parish of Leiston. A registered office is not always where a company trades. | Current register | Companies House | 6 Aug 2026 |
| Local trades | Active companies whose main activity is a trade, registered in the IP16 postcode district, those in the parish of Leiston first | Current register | Companies House | 6 Aug 2026 |
| Planning | Applications within 5 km of the centre of Sizewell | Last 12 months | PlanIt, from council planning registers | 25 Oct 2026 |
| Flood risk | The kilometre square around the centre of Sizewell; nearest river measured from the centre | National assessment 2025 | Environment Agency (NaFRA2), OS Open Rivers | 30 Sept 2026 |
| Transport | The stations nearest to Sizewell, with walking routes from its centre | Departures live | National Rail, NaPTAN, OpenStreetMap | Live |
| Weather | The location of Sizewell | Live forecast | MET Norway | Live |
| National comparisons | England and Wales (broadband: the UK), worked out from the same datasets as the local figures | Same periods as above | Our own calculation | 3 Oct 2026 |
Contains public sector information licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right (postcodes, from the ONS Postcode Directory). Map and route data © OpenStreetMap contributors. Weather from MET Norway (CC BY 4.0). Live departures from National Rail. Planning data from planit.org.uk.