Version: 1.0.6 | Published: 21 Aug 2026 | Updated: 11 days ago
Summary
Documentation
Associated Media:
Description:
The NHS Talking Therapies, for anxiety and depression programme (formerly known as Improving Access to Psychological Therapies - IAPT) was developed to improve the delivery of, and access to, evidence-based, NICE recommended, psychological therapies for depression and anxiety disorders within the NHS.
NHS Talking Therapies, for anxiety and depression services are characterised by three key principles:
1. All psychological therapies offered are evidence-based and delivered at the appropriate dose: where NICE recommended therapies are matched to the mental health problem, and the intensity and duration of delivery is designed to optimise clinical outcomes.
2. All within the clinical workforce are appropriately trained and supervised: high-quality care is provided by clinicians who are trained to an agreed level of competence and accredited in the specific therapies they deliver, and they receive weekly outcomes focused supervision from senior clinical practitioners with the relevant competences to support continual improvement.
3. Routine outcome monitoring via standardised measures is used on a session-by-session basis, so that the person having therapy and the clinician offering it have up-to-date information on the persons progress. The outcomes of all NHS Talking Therapies, for anxiety and depression services are published so that the sector can learn from variation in outcomes and public transparency about the benefits and limitations of the services is maintained. This helps guide the course of each persons treatment and provides a resource for service improvement, transparency, and public accountability.
Services are delivered using a stepped-care model, which works according to the principle that people should be offered the least intrusive intervention appropriate for their needs first.
NHS Talking Therapies, for anxiety and depression services provide treatment for people with the following common mental health problems:
Agoraphobia
Body Dysmorphic Disorder (BDD)
Depression
Generalised anxiety disorder
Health anxiety (hypochondriasis)
Mixed depression and anxiety (the term for sub-syndromal depression and anxiety, rather than both depression and anxiety)
Obsessive-Compulsive Disorder (OCD)
Panic disorder
Post-traumatic Stress Disorder (PTSD)
Social anxiety disorder
Specific phobias (such as heights, flying, spiders etc.).
In Pipeline:
Available
Coverage
Spatial:
- United Kingdom
- England
- London
- Brent
- Ealing
- Hammersmith and Fulham
- Harrow
- Hillingdon
- Hounslow
- 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:
The IAPT linked table holds activity data from Mental health providers and
contains the care activity, care contact, long term conditions (LTC), referrals,
assessment scores, accommodation status, disability type, waiting times and
overseas visitor tables for individuals who have accessed IAPT services within
NWL.
Provenance
Origin
Purpose:
- Administrative
- Care
- Other
Dataset Type:
- Health and disease
- Treatments/Interventions
Dataset Sub-Type:
Mental health
Source:
EPR
Collection Source:
- Secondary care - Accident and Emergency
- Secondary care - Outpatients
- Secondary care - In-patients
Image Contrast:
No
Temporal
Publishing Frequency:
Monthly
Distribution Release Date:
01 May 2025
Start Date:
31 March 2017
Time Lag:
1-2 months
Accessibility
Access
Access Rights:
London Secure Data Environment Enquiry Form
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, MFA (multi-factor
authentication) and OAUTH (open authentication). 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 secure data
environment disclosure control standards.
Access Request Cost:
Access costs will be determined on a project-by-project basis and will depend on
the specific data requirements, platform setup, and any additional services
needed to deliver the project successfully.
Delivery Lead Time:
1-2 months
Data Controller:
Participating London health care organisations act as Joint Data Controllers
within the London SDE. These organisations include for example GP Practices and
Acute Providers from across London.
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. NHS North East London ICB hosts
OneLondon and operates the London Data Service (LDS) as a data processor on
behalf of those organisations, whilst Imperial College Healthcare NHS Trust
hosts the London Analytics Platform (LAP), with Imperial NHS Trust acting as the
data processor for data processing activities undertaken within the platform.
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
- SNOMED CT
Conforms To:
LOCAL
Language:
English
Format:
Text
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 SDE Platform
Observations
Statistical Population
Population Description
Population Size
Measured Property
Observation Date
Events
183913
Count
10 December 2025
Persons
116962
Count
10 December 2025
Origin
Name:
NWL Data Catalogue