The choice of medical record system sits at the heart of how a GP practice operates. From booking appointments to issuing prescriptions, generating referrals, and maintaining structured clinical documentation, the clinical system is the single most consequential piece of infrastructure in primary care. Yet for many clinicians and practice managers, the landscape of available systems and the criteria for evaluating them remain poorly understood outside of day-to-day habit. This article provides a factual overview of the main medical record systems used in UK primary care, how practices procure and compare them, and how emerging technologies such as AI medical assistants are beginning to integrate with them.

What are medical record systems in UK primary care?

The terms Electronic Health Record and Electronic Patient Record are often used interchangeably in NHS and independent GP settings, though technically an Electronic Patient Record tends to refer to records held within a single organisation, while an Electronic Health Record implies a broader, potentially cross-organisational record. In practice, the distinction matters less than the function. Both refer to the digital systems in which clinicians record consultations, manage prescriptions, store test results, and coordinate patient care.

UK primary care is considered almost exclusively electronic, and the UK has a high rate of GP record computerisation. For the vast majority of GP practices, the clinical system is not an optional tool. It is the operational foundation of the practice.

How GP practices use clinical systems

GP practices rely on their clinical system for a wide range of daily functions that extend well beyond note-taking. Core use cases include:

• Appointment scheduling and patient registration — managing patient lists and booking workflows

• Clinical documentation — recording consultation notes, often using structured templates

• Prescribing — generating and authorising repeat and acute prescriptions electronically

• Clinical coding — applying SNOMED CT (Systematised Nomenclature of Medicine Clinical Terms) codes to diagnoses, symptoms, and interventions to support data quality, reporting, and population health management

• Referrals — generating and tracking referrals to secondary care and community services

• Patient communication — sending letters, test results, and administrative messages

• Reporting and QOF — generating data for Quality and Outcomes Framework submissions and other contractual reporting requirements

The depth to which a practice uses these functions varies, but the clinical system underpins virtually every patient interaction. System choice has significant implications for workflow efficiency, data quality, and clinician experience.

The main clinical systems used in UK primary care

EMIS Web

EMIS Web is the most widely used GP clinical system in England. Market share estimates place EMIS Web at approximately 55% of GP practices, making it the dominant product in the primary care market. EMIS Health, which develops the system, rebranded under the Optum umbrella in March 2025, though the EMIS Web product name has been retained.

EMIS Web supports the full range of primary care workflows: consultation recording, prescribing, referral management, clinical coding via SNOMED CT, and integration with NHS services including the Electronic Prescription Service and GP2GP record transfer. It also supports a wide range of third-party integrations, including tools such as Accurx for patient messaging and, increasingly, AI documentation tools.

EMIS Web and SystmOne together hold a duopoly in England, with the two systems collectively covering more than 90% of GP practices. This concentration has implications for procurement, interoperability, and the pace of innovation across the sector.

SystmOne (TPP)

SystmOne, developed by The Phoenix Partnership (TPP), is the second-largest GP clinical system in England, with approximately 35% of the primary care market. It is particularly prevalent in certain regions of England and is notable for its shared record architecture, which allows patient records to be accessed across different care settings, including GP practices, community nursing teams, mental health services, and some secondary care providers, without requiring separate data transfers.

This shared record capability has made SystmOne a preferred system in integrated care settings where continuity across organisational boundaries is a priority. A peer-reviewed review published in PMC confirms that EMIS Health and TPP together cover more than 90% of GP practices in England, providing academic backing for the market dominance figures cited by industry sources.

SystmOne also supports third-party integrations, including Accurx and AI-assisted documentation tools, and is used in some NHS 111 and urgent care settings in addition to general practice.

Vision (Cegedim / OneAdvanced)

Vision, historically developed by INPS and then Cegedim, is the third-largest GP clinical system in England, with a market share of approximately 9%. It has a long-established user base, particularly among practices that have used it for many years and have not transitioned to EMIS or SystmOne.

The Vision product line has evolved over time. The legacy Vision 3 platform has been supplemented by Vision+, which provides enhanced clinical decision support and recall management, and Vision Anywhere, a cloud-based consultation platform designed to support remote and mobile working. In August 2025, Vision was acquired by OneAdvanced, marking a significant ownership change for the product.

Microtest Evolution

Microtest Evolution is a smaller but accredited GP clinical system with an established presence among independent and NHS practices, particularly in Wales and parts of England. It offers core GP functionality including appointment management, prescribing, and clinical documentation, and is approved under NHS accreditation frameworks. While its market share is modest compared to the three dominant systems, it remains a viable option for practices seeking an alternative to the EMIS/SystmOne duopoly, particularly in devolved nations.

2025 saw the first new market entrant in 25 years, with Medicus Health entering the GP clinical system market, a development that may signal gradual change in a sector that has historically been resistant to new competition.

Clinical systems in Scottish, Welsh, and Northern Irish primary care

The primary care clinical system landscape outside England operates under distinct national frameworks, and an England-only view of the market is incomplete for healthcare decision-makers operating across the UK.

In NHS Scotland, Vision has historically been the dominant GP clinical system, though EMIS is also used in some practices. Scotland has pursued its own national digital health strategy, with the Scottish Government investing in interoperability infrastructure that differs from NHS England's approach.

In NHS Wales, the Welsh Government has developed the Welsh GP Record and the Welsh Clinical Portal as national platforms for sharing clinical information across care settings. EMIS Web and Vision are both used in Welsh GP practices, but the national infrastructure layer is distinct from England's. Microtest Evolution also has a presence in Wales.

In Health and Social Care Northern Ireland, the clinical system landscape reflects the integrated nature of health and social care in Northern Ireland, with EMIS and other systems in use across GP practices operating under different commissioning arrangements to those in England.

Decision-makers evaluating clinical systems across multiple UK nations should account for these regional differences in procurement frameworks, national platforms, and interoperability requirements.

How GP practices choose or switch clinical systems

GP practices in England procure clinical systems through the GP IT Futures framework, administered by NHS England. This framework sets out accreditation requirements that systems must meet to be offered to NHS practices, covering clinical safety, data standards, interoperability, and NHS service integration. Practices typically access systems through their Integrated Care Board (ICB), which manages GP IT contracts and funding at a regional level.

Switching clinical systems is infrequent in practice. The barriers include:

• Data migration complexity — transferring years of structured and unstructured clinical records between systems is technically demanding and carries clinical risk

• Staff retraining — clinical and administrative staff require significant time to become proficient on a new system

• Workflow disruption — transitions typically involve a period of reduced efficiency that practices are reluctant to absorb

• Contractual constraints — Integrated Care Board-level contracts may limit the systems available to practices in a given region

These barriers mean that many practices remain on older systems not because they are the best available option, but because the cost and disruption of switching outweighs the perceived benefit. This dynamic has contributed to the persistence of the EMIS/SystmOne duopoly and the slow pace of market entry by new competitors.

Interoperability between primary and secondary care systems

One of the most consistently cited challenges in UK healthcare IT is the difficulty of sharing clinical information between primary and secondary care systems, a problem rooted in interoperability. GP clinical systems such as EMIS Web and SystmOne operate largely independently of the hospital medical record systems used by NHS trusts, which include platforms such as Epic, Cerner (now Oracle Health), and System C's Medway.

A survey of NHS staff found that medical record systems are widely used across the NHS, though interoperability remains a significant challenge for effective implementation in many organisations.

The NHS has pursued several initiatives to improve data sharing across care settings, including:

• GP2GP — enables the electronic transfer of patient records between GP practices when patients register with a new practice

• Summary Care Record — provides hospital clinicians with access to key GP data including medications, allergies, and adverse reactions

• Shared Care Records — Integrated Care Board-level initiatives to create shared views of patient data across primary, community, and secondary care

Research published in the International Journal of Population Data Science highlights the infrastructure used to link primary care records to secondary care data at a national level, including NHS England's Master Person Service and the Clinical Practice Research Datalink, infrastructure that underpins both clinical care and population health research.

Despite these initiatives, seamless real-time interoperability between GP and hospital systems remains an aspiration rather than a consistent reality across the NHS. The adoption of medical record systems across NHS hospital trusts has progressed significantly, though full interoperability coverage remains incomplete. Adoption alone does not resolve the interoperability challenge if systems cannot communicate effectively with one another.

How AI tools integrate with GP clinical systems

AI medical assistants and ambient voice technology (AVT) are beginning to integrate with GP clinical systems, with the primary use case being the reduction of documentation burden. The workflow typically involves an AI tool listening to a consultation in real time, generating a structured clinical note, and either pushing that note directly into the clinical system or presenting it for clinician review before filing.

Integration with EMIS Web and SystmOne is possible through application programming interface (API) access, though the depth of integration varies between vendors and tools. Key considerations include:

• Structured note output — whether the AI tool can produce notes that map to the templates and fields used in the GP's clinical system, rather than generating free text that requires manual reformatting

• Clinical coding support — whether the tool can suggest or apply SNOMED CT codes alongside the narrative note, reducing the coding step for clinicians

• Workflow fit — whether the tool operates within the existing consultation workflow or requires clinicians to adopt a separate interface

Both EMIS Web and SystmOne now support third-party AI documentation integrations, including tools accessed through the Accurx platform. The pace of AI integration is accelerating, but the evidence base for AI scribes improving clinical outcomes, as opposed to reducing documentation time, remains in early development. Most published evaluations to date focus on usability and time savings rather than downstream patient outcomes.

Research published in NPJ Digital Medicine demonstrates how primary care clinical data is increasingly used for predictive modelling and clinical decision support, including foundation models designed to identify patients at risk of multiple long-term conditions. This broader use of clinical data for AI-driven intelligence is likely to shape how GP systems develop over the next several years.

What clinicians should consider when evaluating a GP clinical system

For practice managers and clinicians assessing GP clinical systems, whether for a new practice, a merger, or a potential switch, the following criteria are consistently cited as the most practically significant:

• Clinical workflow fit — does the system's consultation interface, prescribing workflow, and template structure match how the practice works? A technically capable system that creates friction in daily use will erode clinician satisfaction over time

• Interoperability — can the system share data effectively with local hospital systems, community services, and national NHS platforms? This is particularly important for practices operating within integrated care networks

• Support quality and training — what does the vendor provide in terms of implementation support, ongoing helpdesk access, and training resources? This is especially relevant for smaller practices without dedicated IT staff

• AI readiness — does the system support integration with AI documentation tools, and what is the vendor's roadmap for embedding AI-assisted features natively? Given the pace of development in this area, this is increasingly a forward-looking procurement consideration

• Data security and GDPR compliance — does the system meet NHS Data Security and Protection Toolkit requirements, and how does the vendor handle data residency and access controls? For practices handling sensitive patient data, this is a non-negotiable baseline

• Total cost of ownership — beyond the headline contract cost, what are the costs of data migration, staff training, third-party integrations, and ongoing support?

In many parts of England, the choice of GP clinical system is not entirely within a practice's control. Integrated Care Board-level contracts may restrict which systems are available and funded locally, meaning that the evaluation criteria above apply most directly to practices with genuine procurement flexibility, including independent and private GP practices, and those in regions where Integrated Care Boards offer a choice between accredited systems.

The IQVIA Medical Research Data resource, which draws on primary care clinical data from across the UK, illustrates how the structured data generated by GP clinical systems has value well beyond the individual consultation, informing population health research, treatment pattern analysis, and healthcare policy. For decision-makers, this underscores why data quality, coding discipline, and system interoperability are not merely operational concerns but have broader implications for how practices contribute to NHS-wide intelligence.

Frequently asked questions

▶ Which clinical systems do most GP practices in England use?

EMIS Web and SystmOne together cover more than 90 per cent of GP practices in England. EMIS Web holds approximately 55 per cent of the market, and SystmOne holds approximately 35 per cent. Vision accounts for around 9 per cent, with Microtest Evolution serving a smaller number of practices, particularly in Wales.

▶ What do GP practices use their clinical system for?

GP practices rely on their clinical system for appointment scheduling, clinical documentation, prescribing, clinical coding using SNOMED CT (Systematised Nomenclature of Medicine Clinical Terms), referral management, patient communication, and contractual reporting such as Quality and Outcomes Framework submissions. The clinical system underpins virtually every patient interaction in a practice.

▶ Why is switching GP clinical systems so difficult?

Switching clinical systems involves migrating years of structured and unstructured clinical records, which is technically demanding and carries clinical risk. Staff retraining takes significant time, and practices typically experience a period of reduced efficiency during the transition. Integrated Care Board-level contracts may also restrict which systems are available in a given region, limiting a practice's options.

▶ Do GP clinical systems work the same way across Scotland, Wales, and Northern Ireland?

No. Each nation operates under its own framework. In NHS Scotland, Vision has historically been the dominant system, though EMIS is also used. NHS Wales has developed its own national platforms, including the Welsh GP Record and the Welsh Clinical Portal, alongside EMIS Web and Vision. Health and Social Care Northern Ireland operates under different commissioning arrangements, with EMIS and other systems in use across GP practices.

▶ Can GP clinical systems share data with hospital systems?

Not seamlessly. GP clinical systems such as EMIS Web and SystmOne operate largely independently of hospital medical record systems. The NHS has introduced initiatives including GP2GP for record transfer between practices, the Summary Care Record for sharing key GP data with hospital clinicians, and Shared Care Records at Integrated Care Board level. Despite these, real-time interoperability between GP and hospital systems remains inconsistent across the NHS.

▶ How do AI medical assistants integrate with GP clinical systems?

AI medical assistants typically listen to a consultation in real time, generate a structured clinical note, and either push that note directly into the clinical system or present it for the clinician to review before filing. Integration with EMIS Web and SystmOne is possible through application programming interface access, including tools accessed via the Accurx platform. The depth of integration varies between vendors.

▶ Can AI tools handle clinical coding as well as note-writing?

Some AI documentation tools can suggest or apply SNOMED CT codes alongside the narrative note, which reduces the separate coding step for clinicians. Whether a tool supports this depends on the specific product. Practices evaluating AI tools should check whether the output maps to the templates and fields used in their clinical system, rather than generating free text that requires manual reformatting.

▶ How do GP practices in England procure a clinical system?

GP practices in England procure clinical systems through the GP IT Futures framework, administered by NHS England. This framework sets accreditation requirements covering clinical safety, data standards, interoperability, and NHS service integration. Practices typically access systems through their Integrated Care Board, which manages GP IT contracts and funding at a regional level.

▶ What should a practice consider when evaluating a GP clinical system?

The most practically significant criteria include clinical workflow fit, interoperability with local hospital and community services, support quality and training provision, readiness for AI documentation integrations, data security and compliance with NHS Data Security and Protection Toolkit requirements, and total cost of ownership including migration, training, and ongoing support. In many parts of England, Integrated Care Board contracts limit which systems a practice can choose, so these criteria apply most directly to practices with genuine procurement flexibility.

▶ Is there evidence that AI scribes improve patient outcomes in primary care?

The evidence base is still developing. Most published evaluations of AI documentation tools in primary care focus on usability and time savings rather than downstream patient outcomes. The article notes that evidence for AI scribes improving clinical outcomes, as opposed to reducing documentation time, remains in early development.