Carnall Farrar Ltd

Population Segmentation Explorer

At the heart of any integrated care strategy is an understanding of the local population. Our web-based analytical tool allows Practices, locality, CCG or STP teams to understand the differences in levels of resource consumptions by cohort, supporting the development new care models, enrolment of patients, and the capitated payment


  • Cloud-based whole system approach to population segmentation
  • Visualisation at integrated system, CCG and GP practice/network level
  • Analyses data from all in scope organisations
  • Segments population based on age and condition
  • Option to create integrated dataset with data warehouse
  • Option for advice on information governance
  • Reveals resource consumption and activity for each population segment
  • Uses machine learning to predict segmentation from national data
  • ‘Real’ segmentation can be built using local data


  • Understand population make up at different geographic levels
  • Understand population size, activity, spend and spend per head
  • Inform design of integrated care models for specific cohorts
  • Identify most resource intensive patients for MDT enrolment
  • View year of care for individual patients
  • Use as basis for capitated payment models
  • View activity by health and care setting
  • Leverage Carnall Farrar’s extensive experience in integrated care delivery


£17500 per licence per year

  • Free trial available

Service documents

G-Cloud 11


Carnall Farrar Ltd

Alfie Fielder

0203 770 7536

Service scope

Service scope
Software add-on or extension No
Cloud deployment model Public cloud
Service constraints The service is available only over the web on PCs/tablets. Access is restricted to authorised users. No access is available to underlying data structures. Patient-identifiable or row-level data can only be accessed by authorised care professionals, as agreed with the client. Planned maintenance and upgrades are undertaken overnight and at weekends.
System requirements
  • Modern web browser (Chrome 50+, Internet Explorer 10+, Microsoft Edge)
  • Mobile phone or e-mail for two-factor authentication
  • Sufficient data-sharing agreements in place
  • For actual segmentation, consistent and timely provision of patient-level data

User support

User support
Email or online ticketing support Email or online ticketing
Support response times Same day on weekdays
User can manage status and priority of support tickets Yes
Online ticketing support accessibility None or don’t know
Phone support Yes
Phone support availability 9 to 5 (UK time), Monday to Friday
Web chat support No
Onsite support Yes, at extra cost
Support levels Support will vary according to the option chosen and local data complexity. The options include: 1.For clients without an integrated dataset: we support clients to develop an integrated dataset and perform segmentation analysis 2.For clients without an integrated dataset: we perform segmentation analysis using a modelled approach using local data and data from a number of areas around the country as a proxy 3.For clients with an integrated dataset, we perform segmentation analysis using existing data on health and social care spend by point of delivery.

Three types of user support are available: on-boarding, ongoing and bespoke support: 1.Initial on-boarding support (core) Clients receive a detailed Welcome Pack which outlines the implementation process for the Population Segmentation Explorer tool. An initial mobilisation discussion is then set up with the client to set the scope and agree a detailed and customised implementation project plan. We provide a training document and guide.2.Ongoing user support (core) We provide ongoing help desk support from a technical account manager via online ticketing. 3.Bespoke support (optional)Further bespoke support to customise analysis and outputs for individual organisations is available (as Cloud Support Services) as per the rate card provided.
Support available to third parties Yes

Onboarding and offboarding

Onboarding and offboarding
Getting started Mobilisation: We would work with users to confirm with you the objectives and expected outputs of the model. Data collection:
If local patient-level data is to be used, we will issue a data request to meet the specification and outputs agreed, and in parallel work with the Information Governance team to ensure the correct IG arrangements are in place and are in compliance with GDPR requirements. We would then work with information teams to get the data itself, firstly historic, but then setting up forward data feeds.Data loading and validation: Once we have received all the data we would load it into the tool ready for validation. We would then work with local information teams to ensure that the initial outputs from the model are inline with the data provided and ultimately agree the baseline 'do nothing͛' scenario. Embedding and socialising:Lastly, we will introduce local teams to the tool, provide training materials, and advise on its integration into local processes and working practices.
Service documentation Yes
Documentation formats
  • HTML
  • PDF
End-of-contract data extraction Segmentation outputs can be extracted from the tool at any time by authorised users in CSV format. All data inputs provided over the duration of the contract could be provided in CSV format at contract end. Other formats available at additional cost.
End-of-contract process At contract end, all data inputs provided by local organisations can be extracted in CSV format in the data structure used by the tool within the price of the contract. Other formats available at additional cost.

Using the service

Using the service
Web browser interface Yes
Supported browsers
  • Internet Explorer 10
  • Internet Explorer 11
  • Microsoft Edge
  • Chrome
Application to install No
Designed for use on mobile devices No
Accessibility standards None or don’t know
Description of accessibility The Population Segmentation Explorer can provide a visualisation layer to allow exploration of population segmentation at STP, CCG, locality and practice level.
Accessibility testing None
Customisation available Yes
Description of customisation Additional dashboards can be added, customised to the end user. We would work with you tounderstand you overall requirements, then design and test the new dashboard with you. The service can be customised to integrate any relevant data sources which the system can provide in a consistent and timely manner. Furthermore, Carnall Farrar continually seeks user input and feedback and maintain a forward roadmap of functionality upgrades.


Independence of resources We have built our platform on the Amazon Web Services cloud platform, ensuring ‘burstable’ computing capacity to meet short-term peaks in user demand. We use advanced performance analytics software to track the running speed of user requests, database queries and complex computations and take corrective actions when more structural increases in our capacity are required.


Service usage metrics No


Supplier type Not a reseller

Staff security

Staff security
Staff security clearance Conforms to BS7858:2012
Government security clearance Up to Baseline Personnel Security Standard (BPSS)

Asset protection

Asset protection
Knowledge of data storage and processing locations Yes
Data storage and processing locations
  • United Kingdom
  • European Economic Area (EEA)
User control over data storage and processing locations No
Datacentre security standards Complies with a recognised standard (for example CSA CCM version 3.0)
Penetration testing frequency At least once a year
Penetration testing approach Another external penetration testing organisation
Protecting data at rest
  • Physical access control, complying with CSA CCM v3.0
  • Encryption of all physical media
Data sanitisation process Yes
Data sanitisation type Explicit overwriting of storage before reallocation
Equipment disposal approach Complying with a recognised standard, for example CSA CCM v.30, CAS (Sanitisation) or ISO/IEC 27001

Data importing and exporting

Data importing and exporting
Data export approach All dashboard views within the tool have a built-in export feature which generates a CSV file containing the data being viewed for download to the user’s computer.
Data export formats CSV
Data import formats CSV

Data-in-transit protection

Data-in-transit protection
Data protection between buyer and supplier networks TLS (version 1.2 or above)
Data protection within supplier network TLS (version 1.2 or above)

Availability and resilience

Availability and resilience
Guaranteed availability We anticipate that the service will be routinely available between 9am-5pm. Service upgrades may take place outside of these hours; clients would be notified within 72 hours of the event.

Availability cannot be guaranteed in circumstances where the quality data provided is poor or if the client fails to provide data according to the agreed implementation plan.
Approach to resilience The data centres we use are built to physical, environmental, and security standards in an active-active configuration, employing an n+1 redundancy model, ensuring system availability in the event of component failure. Components (N) have at least one independent backup component. All data centres are online and serving traffic. In case of failure, there is sufficient capacity to enable traffic to be load-balanced to remaining sites within the EEA.
Outage reporting The status of the service is monitored by our product team. Any outages are reported by e-mail to all registered users of the service. Planned outages are indicated in advance with a start and end period. Unplanned outages are reported with expected resolution times.

Identity and authentication

Identity and authentication
User authentication needed Yes
User authentication
  • 2-factor authentication
  • Username or password
Access restrictions in management interfaces and support channels Management interfaces are restricted to authorised users only, as nominated by the customer. Authorisation is provided manually by Carnall Farrar staff for security purposes. Support channels are restricted to authorised users with an active account.
Access restriction testing frequency At least every 6 months
Management access authentication Username or password

Audit information for users

Audit information for users
Access to user activity audit information Users contact the support team to get audit information
How long user audit data is stored for User-defined
Access to supplier activity audit information Users contact the support team to get audit information
How long supplier audit data is stored for User-defined
How long system logs are stored for User-defined

Standards and certifications

Standards and certifications
ISO/IEC 27001 certification No
ISO 28000:2007 certification No
CSA STAR certification No
PCI certification No
Other security certifications Yes
Any other security certifications
  • Cyber Essentials certification
  • Completed the NHS Information Governance toolkit assessment to level 2

Security governance

Security governance
Named board-level person responsible for service security Yes
Security governance certified Yes
Security governance standards ISO/IEC 27001
Information security policies and processes In accordance with ISO 27001 we have an Information Security Management system (ISMS) that sets out the overall approach to information security and the processes we follow, encompassing the information security policy. There is a regular ISMS review meeting that reviews the functioning of the ISMS, and progress against actions arising from internal audit and external ISO assurance visits. An annual review of the ISMS itself ensures its continuing suitability and correct implementation.
Annual internal audit is used to ensure policies are being followed and identify any remedial actions required.
To support the effective delivery of information security, we train all staff on induction, and as part of annual Information Governance refresher training. This approach delivers against our Information Security policy.

Data security protocols are agreed with the client at mobilisation, including the escalation pathway should any contraventions of data security be identified. We record and risk assess all data breaches and have a systematic process for breach management:
1. Assess the impact of the breach and notify client lead and internally
2. Agree an action plan with the client, including communicating to anyone affected
Ensure future risks are mitigated via improved controls, e.g. further staff training and education.

Operational security

Operational security
Configuration and change management standard Supplier-defined controls
Configuration and change management approach Changes to the service are tracked by industry-standard version control systems. All proposed changes to the service are tested rigorously in a development ‘sandbox’ for functionality, security and usability. When changes have passed testing, they are made active on the service and logged in the user-accessible ‘News’ section of the tool home page. Significant changes are also tested with a sample of customers and are announced by e-mail ahead of activation.
Vulnerability management type Supplier-defined controls
Vulnerability management approach Our cloud hosting provider performs vulnerability scans on the host operating system, web applications, and databases supporting the service. Approved third party vendors conduct external assessments at least quarterly. Identified vulnerabilities are monitored and evaluated. Countermeasures are designed and implemented to neutralise known/newly identified vulnerabilities.

Our cloud hosting provider monitors newsfeeds/vendor sites for patches and receives customer intelligence via a reporting portal.

Additionally, we undertake regular penetration testing and unit testing to identify any hidden vulnerabilities. Any patches required to the service can be deployed within hours or days depending on the severity of the vulnerability.
Protective monitoring type Supplier-defined controls
Protective monitoring approach We and our cloud hosting provider deploy monitoring devices to collect information on unauthorised intrusion attempts, usage abuse, and network/application bandwidth usage. Devices monitor:

• Port scanning attacks
• Usage (CPU, processes, disk utilization, swap rates, software-error generated losses)
• Application metrics
• Unauthorised connection attempts

Near real-time alerts flag potential compromise incidents to staff for immediate response if necessary
Incident management type Supplier-defined controls
Incident management approach At the outset of a project, data security protocols are agreed with the client, including an agreed escalation pathway should any contraventions of data security be identified. We maintain a full log and risk assessment of any data breaches. Our systematic process for breach management:
1. Assess impact and notify the accountable partner, client lead and director of Information Governance
2. Agree action plan with client, including communicating to those affected and ensuring damage is contained, implemented at our cost
3. Correct problem that led to breach
4. Ensure future risks are mitigated via improved controls, e.g. further staff training

Secure development

Secure development
Approach to secure software development best practice Independent review of processes (for example CESG CPA Build Standard, ISO/IEC 27034, ISO/IEC 27001 or CSA CCM v3.0)

Public sector networks

Public sector networks
Connection to public sector networks No


Price £17500 per licence per year
Discount for educational organisations No
Free trial available Yes
Description of free trial Due to the nature of the product we cannot provide an online free trial service. However, we can provide a demonstration of the product if requested.

Service documents

pdf document: Pricing document pdf document: Skills Framework for the Information Age rate card pdf document: Service definition document pdf document: Terms and conditions
Service documents
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