Version: 1.0.4 | Published: 19 May 2026 | Updated: 7 days ago
Summary
Documentation
Associated Media:
Description:
Client Level Data (CLD) has the potential to transform our understanding of peoples journeys through the social care system. As referenced in Data saves lives, the ability to link client level data from local authorities with NHS records for the same individuals will strengthen our understanding of how people move between health and social care, enabling better oversight of how services work together across the country and a better understanding to improve outcomes for individuals drawing on care.
With routine validation of the data, Adult Social Care CLD will provide local authorities with a robust and consistent minimum core dataset that can be used to meet their local reporting requirements. Local authorities will also be able to request NHS number tracing and linked (pseudonymised) health records for greater commissioning insight into local health and care systems.
This data, particularly when linked with other NHS data, can be used to:
- assess effective delivery of care
- support local service planning
- provide the basis for national indicators
- develop, monitor and evaluate government policy
- enable research
- improve services
In Pipeline:
Available
Coverage
Spatial:
- Hillingdon
- Kensington and Chelsea
- Westminster
Typical Age Range Min:
0
Typical Age Range Max:
150
Material Type:
None/not available
Follow Up:
1 - 10 Years
Pathway:
Care package data relating to patients registered with a NWL GP. A locally
agreed data set between NWL boroughs and commissioners has defined data items
such as start and end dates, allocated teams and service descriptions.
Provenance
Origin
Purpose:
- Administrative
- Care
- Other
Dataset Type:
- Health and disease
- Treatments/Interventions
Dataset Sub-Type:
- Others
- Others
Source:
EPR
Collection Source:
Social care - Other social data
Image Contrast:
Not stated
Temporal
Publishing Frequency:
Quarterly
Distribution Release Date:
07 August 2025
Start Date:
31 March 2023
Time Lag:
2-6 months
Accessibility
Access
Access Rights:
Access Service Category:
TRE/SDE
Access Service:
Researchers will have access to a secure workspace via an airlocked Azure
Virtual Desktop with a specific username and password. Researchers will get
specific access to a relevant subset of the datasets that are present in the SDE
catalogue for their project and will be able to carry out their research within
the safe haven. There are restrictions applied which prevent the researchers
from taking data out of the safe haven. Once the research is completed the
London SDE admin team will need to be contacted for any requests to egress
summary analysis out of the safe haven which will not breach 5 safe standards.
Access Request Cost:
In Progress
Delivery Lead Time:
1-2 months
Data Controller:
Joint data controller model across London: North Central London Integrated Care
System (NCL ICS), Central London Integrated Care System (CL ICS), East London
Integrated Care System (EL ICS), West London Integrated Care System (WL ICS),
South London Integrated Care System (SL ICS)
Data Processor:
The data processor for the London Secure Data Environment (SDE) is primarily
managed by OneLondon, a partnership of London's five integrated care systems
(ICSs) and three health innovation networks.
Jurisdiction:
United Kingdom of Great Britain and Northern Ireland
Usage
Data Use Limitation:
No restriction
Data Use Requirements:
- Collaboration required
- Institution-specific restrictions
- Project-specific restrictions
- Time limit on use
- User-specific restriction
Resource Creator:
- NHS NWL ICS
- London SDE
Format and Standards
Vocabulary Encoding Scheme:
- LOCAL
- NHS NATIONAL CODES
- ODS
Conforms To:
- NHS DATA DICTIONARY
- LOCAL
Language:
English
Format:
- Excel
- SQL
- Tableau
- R
Enrichment and Linkage
Investigations:
Publication About Dataset:
Bottleet al. BMC Medical Informatics and Decision Making (2020) 20:71 https://doi.org/10.1186/s12911-020-1082-7
Linkable Datasets
PID
Title
URL
Each patient will be identified by an unique patient key that can be used to link to all other datasets available within London Analytics Platform
Observations
Statistical Population
Population Description
Population Size
Measured Property
Observation Date
Events
145853
Count
10 December 2025
Persons
23366
Count
10 December 2025
Origin
Name:
NWL Data Catalogue