# CROW Mapping Positional Accuracy Improvement

> A sourced UK public sector contract award published by Natural England.

## Key facts

- Buyer: [Natural England](/buyers/natural-england/contract-awards)
- Supplier: [ENVITIA LIMITED](/suppliers/envitia/public-sector-contract-awards)
- Award value: £18,499
- Tender value: £20,000
- Award date: 15 January 2024
- Published: 19 February 2024
- Contract start: 29 January 2024
- Contract end: 31 March 2024
- Stage: awarded
- Procurement category: services
- Notice ID: 10a21d08-c0f6-4409-8d18-a038c1f98617-724417
- OCID: ocds-b5fd17-ec3152a2-30ef-47d9-b064-539482bc1dd6

## Description

Following a statutory process of consultation and appeal, the Countryside Agency \(CA\) issued in 2004/05 eight conclusive maps of open country \(land consisting wholly or predominantly of mountain, moor, heath or down\) and registered common land \(RCL\) in England, which became the basis of the open access rights that the public now enjoys over the mapped areas, subject to the limitations set out by the Countryside and Rights of Way Act 2000 \(CROW\)\.      After the publication of the Conclusive Maps in 2004/05, the Ordnance Survey \(OS\) undertook a 'Positional Accuracy Improvement' programme \(PAI\) to improve the accuracy of much of its base mapping data\. The changes were particularly pronounced in rural and upland areas where much of the CROW mapping layers are present\. The PAI update meant that the CA's mapping layers of open country, registered common land and section 15 land no longer aligned with boundary features on OS MasterMap, because the boundary features we 'snapped to' had shifted position slightly\. In order to provide a suitable baseline for the review of our CROW mapping data, NE must ensure that the published CROW mapping layers are re-aligned so that they can be accurately displayed against the current OS MasterMap base mapping\. It will not be possible to undertake the review without first correcting our existing data\. We are asking a geospatial consultancy firm to:    Investigate what existing tools and methodologies are available for undertaking this work\.  To make a recommendation to NE about the approach that should be taken\.  To provide an estimate of how long it would take to implement across the country\.  Additional information: To apply for this opportunity you must submit your quotation meeting the requirements detailed in the Request for Quotation \(RFQ\) attached\. Your response must be sent to ben\.nichols@naturalengland\.org\.uk by 6pm on 05 January 2023\. If you have any clarification questions linked to this opportunity or the procurement process please submit these via email to ben\.nichols@naturalengland\.org\.uk\. Please note that, unless commercially sensitive, both the question and the response will be circulated to all tenderers\.

## Related contract awards

- [ETAFFCSFSW012 1-1 On Farm Advice Programme 2026](/contracts/ocds-b5fd17-9bdf53c5-0c04-46de-a671-fe0da869af86) — Natural England
- [ETAFF AENorth02](/contracts/ocds-b5fd17-9eb92cdc-b242-41a2-b351-c02b25cd9089) — Natural England
- [ETAFF AEMidlands02](/contracts/ocds-b5fd17-059c3bd0-9932-4830-a295-06e2d66a6c46) — Natural England
- [Catchment Sensitive Farming: One-to-one Advice Programme July 2026 to December 2026 on behalf of Natural England](/contracts/ocds-b5fd17-0d78f0bb-5b93-4049-88bf-a4d8bc3d5566) — Natural England
- [Navy Digital - Sustainment of Architecture Services](/contracts/ocds-b5fd17-6b8fbfd8-a95c-4e6c-aa4f-148efaec68d6) — Ministry of Defence
- [10646451 - Discovery, Retrieval and Visualisation requirement](/contracts/ocds-b5fd17-488a70c4-2c9f-42f2-bfff-34cb257b049e) — Ministry of Defence
- [Taxi and MPV \(1-8 seats\) Passenger Assistant - Taxi and MPV \(1-8 seats\) Passenger Assistant](/contracts/ocds-b5fd17-88a2edd4-8980-4b30-90b2-cd06e6f272dd) — East Sussex County Council
- [Taxi and MPV \(1-8 seats\) Passenger Assistant - Taxi and MPV \(1-8 seats\) Passenger Assistant](/contracts/ocds-b5fd17-72db28b1-c882-4e40-8470-acd916a51a98) — East Sussex County Council
- [Technology Delivery Partner 2026](/contracts/ocds-b5fd17-2a03f0e3-ff79-468b-bffc-b6123bf61fb0) — GOVERNMENT PROPERTY AGENCY
- [QBE092 09:00 2026-08-24 Brandon & Lakenheath to West Suffolk College, Bury St Edmunds - 6-seater and a Passenger Assistant required - AWARD](/contracts/ocds-b5fd17-c26c4d20-3bb7-4548-9459-91f832bd3c38) — Suffolk County Council Passenger Transport

## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/10a21d08-c0f6-4409-8d18-a038c1f98617-724417)