Regulatory framework overview
This page provides an overview of the UK Medical Devices Regulations 2002 (SI 2002/618, as amended) and the role of the Medicines and Healthcare products Regulatory Agency (MHRA). It covers the framework applicable in Great Britain. For Northern Ireland, EU MDR 2017/745 and EU IVDR 2017/746 apply — see Great Britain vs Northern Ireland.
This site provides general information only and does not constitute legal or regulatory advice. Always consult official MHRA guidance and the legislation text before making regulatory decisions.
The UK regulatory landscape at a glance
The UK medical device regulatory framework has three defining features that set it apart from the EU and other jurisdictions:
- Post-Brexit divergence — Great Britain operates its own framework under UK MDR 2002, while Northern Ireland remains aligned with EU MDR/IVDR.
- Legacy framework in transition — UK MDR 2002 is substantially derived from the older EU MDD/AIMD/IVDD directives (not the newer EU MDR/IVDR). Reform is underway.
- MHRA as the single competent authority — Unlike the EU, which has 27 national competent authorities, MHRA is the sole UK regulator for medical devices across the regulatory lifecycle.
The regulator: MHRA
The Medicines and Healthcare products Regulatory Agency (MHRA) is an executive agency of the Department of Health and Social Care (DHSC). It is responsible for:
- Setting and enforcing UK medical device regulations
- Registering manufacturers, UKRPs, and devices
- Designating and overseeing UK Approved Bodies (UKABs)
- Monitoring post-market safety (vigilance, recalls, FSCAs)
- Publishing guidance documents
- Conducting market surveillance and enforcement
MHRA operates the MHRA Submissions portal for device registration and the Yellow Card scheme for adverse event reporting.
The legislation: UK MDR 2002 and its structure
The UK Medical Devices Regulations 2002 (SI 2002/618) is divided into three Parts, each governing a category of medical device:
| Part | Scope | Derived from |
|---|---|---|
| Part I | General medical devices (Class I, IIa, IIb, III) | EU MDD 93/42/EEC (as amended) |
| Part II | Active implantable medical devices (AIMDs) | EU AIMD Directive 90/385/EEC |
| Part III | In vitro diagnostic medical devices (IVDs) | EU IVDD 98/79/EC |
Each Part establishes its own Essential Requirements (Schedules 1/1A), classification rules (Schedule 2), and conformity assessment procedures (Schedule 3). Despite being derived from different source directives, the three Parts share common principles: intended purpose, risk-based classification, conformity assessment, market registration, and post-market obligations.
The UK MDR 2002 was significantly amended by SI 2019/791 (the Medical Devices (Amendment etc.) (EU Exit) Regulations 2019) to function as standalone UK law post-Brexit — removing references to EU institutions, replacing CE marking requirements with UKCA, and establishing MHRA as the sole authority.
The Medical Devices Act 2021
The Medical Devices Act 2021 grants the Secretary of State broad powers to amend medical device legislation by statutory instrument, enabling the reform of UK MDR 2002 without primary legislation. MHRA has used this power to extend transitional arrangements and is using it to develop the next generation of UK medical device regulation.
The UKCA mark
The UK Conformity Assessed (UKCA) mark is the conformity mark for the Great Britain market. It replaces CE marking for devices placed on the GB market.
- The UKCA mark signals that the device has been assessed against UK MDR 2002 Essential Requirements
- For Class I devices: the manufacturer self-declares conformity and affixes the UKCA mark
- For Class IIa, IIb, III, AIMD, and higher-risk IVDs: a UK Approved Body must be involved before the UKCA mark is applied
- The UKCA mark is accompanied by the manufacturer's registered address (or UKRP's address for non-UK manufacturers)
CE marking is currently accepted in GB under transitional arrangements until 30 June 2030. See UKCA marking requirements and Great Britain vs Northern Ireland for the transitional position.
UK Approved Bodies (UKABs)
UK Approved Bodies are organisations designated by MHRA to carry out third-party conformity assessment. They are the UK equivalent of EU Notified Bodies.
- UKABs are designated for specific device types and conformity assessment procedures
- MHRA maintains the list of designated UKABs on gov.uk
- UKAB certificates are valid for the GB market only — EU Notified Body certificates are needed for the EU and NI markets
- UKABs must be re-assessed periodically by MHRA
Key UKABs currently designated include BSI (British Standards Institution), SGS UK Ltd, and others. See UK Approved Bodies for the full list and guidance on selection.
MHRA registration
All manufacturers, UK Responsible Persons (UKRPs), and authorised representatives placing devices on the GB market must register with MHRA before doing so. Registration is completed via the MHRA Submissions portal.
Registration requirements include:
- Legal entity details of the manufacturer and/or UKRP
- Device descriptions and classification
- Relevant certificates (where applicable)
- Declaration of conformity references
This is distinct from conformity assessment — registration is an administrative market access obligation; conformity assessment is the technical compliance process.
The UK Responsible Person (UKRP)
Any manufacturer not established in the United Kingdom who places a device on the GB market must appoint a UK Responsible Person (UKRP). The UKRP:
- Must be established in Great Britain
- Is the manufacturer's legal representative with MHRA
- Registers the manufacturer and devices with MHRA
- Is jointly responsible for ensuring the device meets UK MDR 2002 requirements
- Must be identified on the device label or packaging
The UKRP role is analogous to the EU Authorised Representative (EU REP) in the EU framework. See UK Responsible Persons for full obligations.
The conformity assessment pathway
The route a manufacturer must take to demonstrate compliance depends on device classification:
Determine device type and classification
│
├─ Class I (non-sterile, non-measuring, non-reusable surgical) ──→ Self-declaration → UKCA mark
│
├─ Class I (sterile / measuring / reusable surgical) ──→ UKAB (limited scope) → UKCA mark
│
├─ Class IIa ──→ UKAB involvement required → UKCA mark
│
├─ Class IIb ──→ UKAB involvement required → UKCA mark
│
├─ Class III ──→ Full UKAB assessment (design dossier + QMS) → UKCA mark
│
├─ AIMD ──→ Full UKAB assessment → UKCA mark
│
├─ IVD General / Self-test ──→ Self-declaration → UKCA mark
│
├─ IVD List B ──→ UKAB involvement required → UKCA mark
│
└─ IVD List A ──→ Full UKAB assessment (design dossier) → UKCA mark
In all cases, the manufacturer prepares a technical file (or design dossier for higher-risk devices) demonstrating conformity with the Essential Requirements, and issues a UK Declaration of Conformity.
Essential Requirements
The Essential Requirements are the core safety and performance standards that all UK-regulated medical devices must meet. They are set out in:
- Schedule 1 of UK MDR 2002 — for general medical devices and AIMDs
- Schedule 1A of UK MDR 2002 — for IVD medical devices
The Essential Requirements cover:
- General safety and performance
- Design and construction requirements
- Sterility requirements
- Requirements for devices with a measuring function
- Labelling and IFU requirements
- IVD-specific performance requirements
These are substantively similar to the Essential Requirements of the former EU MDD/AIMD/IVDD directives, retained as UK law.
How UK MDR 2002 compares to EU MDR 2017/745
Manufacturers coming from an EU MDR background should note the key structural differences:
| Aspect | UK MDR 2002 (GB) | EU MDR 2017/745 (EU & NI) |
|---|---|---|
| Framework generation | Based on former MDD/AIMD/IVDD | New-generation post-2017 regulation |
| Classification rules | Rules 1–18 (Schedule 2) | Rules 1–22 (Annex VIII) — more extensive |
| Safety requirements | Essential Requirements | General Safety & Performance Requirements (GSPR, Annex I) |
| Technical documentation | Technical file | Technical documentation (Annex II & III) — more detailed |
| UDI system | UDI required (MHRA implementing) | UDI mandatory (EUDAMED) |
| Clinical evidence | Required; less prescriptive | Highly prescriptive (Art. 61, Annex XIV) |
| Database | MHRA Submissions portal | EUDAMED |
| IVD classification | List A / List B / Self-test / General | Class A / B / C / D (IVDR, Annex VIII) |
| Non-medical purpose devices | Not currently regulated | Annex XVI devices regulated |
The reform agenda
MHRA has been developing a reformed UK medical device regulatory framework since 2021. The reform programme aims to:
- Modernise the UK MDR 2002 to reflect current technology (AI, SaMD, combination products)
- Introduce clearer requirements for clinical evidence and post-market surveillance
- Establish a UDI system aligned with international best practice
- Clarify the UKRP framework
MHRA has published several consultation documents and intends to use the powers in the Medical Devices Act 2021 to implement reforms by statutory instrument. Monitor the MHRA consultations page and the What's New section for updates.
Related pages
- Great Britain vs Northern Ireland — the dual-market position
- Who needs to comply? — roles and obligations
- Post-Brexit transition timeline
- Classification — Classes I–III, AIMD, IVD
- UK Approved Bodies
- UKCA marking requirements
Official references
| Reference | Description |
|---|---|
| UK MDR 2002 (SI 2002/618) | Primary legislation — full consolidated text |
| SI 2019/791 | Post-Brexit amendments |
| Medical Devices Act 2021 | Enabling powers for regulatory reform |
| MHRA: Regulating medical devices in the UK | Principal MHRA guidance document |
| MHRA: UKCA marking guidance | How to apply the UKCA mark |
| gov.uk: UK Approved Bodies | Current list of designated UKABs |