At Product Development Engineers Ltd, we help mechanical product manufacturers and design teams meet the technical compliance requirements necessary for market access — including CE marking, UKCA certification, and compliance with essential health and safety standards.

Our compliance services ensure your product meets legal obligations and helps you stand out with credible, well-structured safety documentation. From early-stage risk assessments to full technical construction files and declaration documents, we provide tailored support to suit your organisation’s resources, industry, and product type.
If you’re still in the early stages of development, our Mechanical Design Services can help you integrate compliance thinking from day one.
CE and UKCA Marking for Mechanical Products
When placing mechanical products on the market in the UK or EU, the key framework is the Machinery Directive (2006/42/EC) and its UK equivalent under the UKCA regime.
We support clients in navigating and applying this framework effectively — using compliance not only as a requirement, but as a strategic advantage.
Our services include:
- Guidance on CE and UKCA marking requirements
- Risk assessments in line with the directive — focused on achieving ALARP (As Low As Reasonably Practicable) standards
- Ongoing design-stage integration of safety planning
- Development of Technical Construction Files (TCFs)
- Creation of Declarations of Conformity and Declarations of Incorporation
We advocate bringing compliance into the project early — so it drives better safety and engineering outcomes from the start, instead of being bolted on at the end.
Supporting Broader EU Directives and UK Regulations
In addition to general machinery compliance, we also support clients working under more specialist directives, including:
- 2016/426/EU – Gas Appliance Regulation (GAR)
- 2014/68/EU – Pressure Equipment Directive (PED)
- Low Voltage and EMC Directives
We work with you to:
- Identify applicable directives and conformity paths
- Apply relevant harmonised (EN) standards
- Prepare and maintain supporting evidence
- Conduct design-stage calculations or safety justifications as needed
Our role is to make this process efficient, justifiable, and robust — without overengineering or missing critical obligations.
Risk Assessments and Use of Harmonised Standards
Effective risk management is at the heart of compliance.

We help you produce clear, actionable risk assessments that evolve with your product — and that satisfy the expectations of notified bodies and regulators.
This includes:
- Hazard identification and severity/risk estimation
- Use of EN standards to simplify compliance arguments
- Support for integrating risk reduction into design decisions
- Guidance on documentation that clearly shows due diligence
Using harmonised standards is often the simplest, fastest route to satisfying compliance requirements — and we help you identify and apply the right ones.
Technical Documentation and Authoring Services
Compliance isn’t just about analysis — it’s about communication.

We help you produce high-quality technical documentation that’s clear, compliant, and professional.
We create:
- Operating instructions, assembly manuals, and maintenance procedures
- Safety information, warnings, and pictorial content
- User guides tailored to different audiences
- Documentation aligned with CE/UKCA marking obligations
We combine technical authoring with CAD-derived graphics and illustrations — using the same mechanical models developed during design. The result is clean, accurate documentation that supports user safety and your brand image.
For start-ups and SMEs, this can also be a key differentiator — delivering clarity and confidence where competitors often fall short.
Functional Safety – EN ISO 13849-1 (SRP/CS)
A frequently under-addressed area of compliance is the safety-related parts of control systems (SRP/CS).

Too often, organisations stop at mechanical risk reduction without properly analysing how control systems influence risk.
We support:
- Application of EN ISO 13849-1 (control system safety)
- Validation to EN ISO 13849-2
- Determination of Performance Levels (PL) and architectural categories
- Use of SISTEMA software for structured, industry-standard analysis
We help teams that are primarily mechanical in nature integrate appropriate controls strategies — using engineering judgement and structured methodologies.
Why Work With PDE?
- ✅ Experienced compliance partner for mechanical products
- ✅ Early-stage integration into product development
- ✅ Clear, professional documentation for CE, UKCA and beyond
- ✅ Adaptable support for start-ups through to large engineering teams
- ✅ Trusted guidance in applying EN standards, directives, and best practice
Whether you need a full compliance partner or just expert input on a single document or assessment, we’re ready to help.
Ready to Ensure Your Product is Compliant and Confidently Documented?
Contact us today to discuss how our compliance, safety, and technical authoring services can support your mechanical product development project.
