Lean Six Sigma certification courses
APMG-accredited Lean Six Sigma yellow, green and black belt training, with self-paced option for individuals and tailored programmes for organisations to improve processes and performance.
Lean Six Sigma certifications at a glance
Lean Six Sigma provides a structured approach to improving processes, reducing waste, and increasing customer value. It combines Lean principles with Six Sigma tools to help organisations deliver better, more consistent results across teams and services.
Our Lean Six Sigma pathway includes yellow, green and black belt levels. Yellow belt gives people the confidence to take part in improvement work, while higher belts build deeper problem-solving, data analysis and leadership capabilities for larger, more complex projects.
Compare course optionsRecognised framework
Globally recognised for process improvement across industries.Progressive belt levels
Yellow to black belt, building capability step by step.Progressive belt levels
Apply tools to cut waste, reduce variation and improve performance.Compare Lean Six Sigma courses
There are four Lean Six Sigma belt levels. Use this comparison to see which belt best matches your team’s experience, responsibilities and improvement goals.
Still not sure which course is right for you?
Choose how you learn
Lean Six Sigma training is available as a self-paced yellow belt course for individuals and as tailored programmes for teams at all belt levels. Both options focus on practical tools, real examples and clear guidance, so you can apply what you learn straight away.
Self-paced online
- Study anytime, at your own pace
- Interactive modules and quizzes
- Ideal first step into Lean Six Sigma
Corporate / team training
- Programmes tailored to your team
- Delivered by Lean Six Sigma experts
- Build capability from yellow to black belt
Enrol on a Lean Six Sigma course
Choose how you want to study below. You can enrol on a self-paced online yellow belt course, or request tailored Lean Six Sigma training (yellow, green and black belts) for your team, all aligned with APMG-accredited Lean Six Sigma standards.
Why choose Knowledge Train?
Accredited Lean Six Sigma training
Expert trainers
Practical, applied learning
Flexible study options
Clear belt structure
Support at every stage
Whether you’re new to process improvement, applying Lean Six Sigma in your role, or building on existing experience, there’s a Lean Six Sigma belt to match your goals.
Start a new career in process improvement
Build core improvement skills so you can move into roles focused on making processes and services work better.
Learn to use Lean Six Sigma in your role
Apply a clear method and tools to solve problems and improve how work flows in your team or department.
Advance your career with a Lean Six Sigma qualification
Demonstrate your process improvement expertise with a recognised Lean Six Sigma certification.Lean Six Sigma courses frequently asked questions (FAQs)
What is Lean Six Sigma?
Lean Six Sigma is a structured approach to improving processes. It combines Lean methods for reducing waste with Six Sigma tools for reducing variation and defects.
What is the difference between yellow, green and black belt?
Each belt represents a different level of knowledge and responsibility. Yellow belt gives an introduction, and green belt support and lead projects, and black belt leads larger programmes and coaches others across the organisation.
How do I choose the right Lean Six Sigma belt?
It depends on your experience and role. If you are new, yellow belt is usually the best place to start. If you already work on improvement projects, a higher belt may be more suitable.
Is Lean Six Sigma only for manufacturing organisations?
No. Lean Six Sigma is used across many sectors, including services, finance, healthcare, government and not-for-profit organisations.
Who are Lean Six Sigma courses suitable for?
Courses are suitable for people who want to improve how work gets done – from those starting in process improvement to managers and specialists leading major change.
Do I need any experience before taking a Lean Six Sigma course?
You do not need experience to start at yellow belt. Higher belts are usually best for people who already work on, or lead, improvement projects.
Are your Lean Six Sigma courses accredited?
Yes. Our Lean Six Sigma courses are accredited by APMG International.
How does the self-paced yellow belt course work?
You study online at your own pace using interactive modules, quizzes and examples. You then take the APMG yellow belt exam online when you are ready.
How does corporate / team training for Lean Six Sigma work?
We design a programme around your goals, people and timescales. Training can focus on one belt level or several and can include your own case studies or processes.
Can we run different belt levels for different people in the same organisation?
Yes. Many organisations start with yellow belt for a wider group and add higher belts for people leading improvement work.
How long does it take to complete each belt?
The self-paced yellow belt course takes around 10 hours to complete. For team training, the length of each course depends on your requirements and the level of depth you need.
Can Lean Six Sigma be combined with our existing improvement methods?
Yes. Lean Six Sigma can sit alongside existing frameworks and be adapted to your organisation’s ways of working.
Do you offer Lean Six Sigma training outside the UK?
Yes. We work with organisations in the UK and internationally, particularly through online and virtual classroom delivery.
Still have questions? Contact us by phone on 0207 148 5985, via live chat, email, or by completing the form below.
How to find us
Knowledge Train
20 Old Bailey, London, EC4M 7AN,
England, United Kingdom.
Call +44 (0)207 148 5985
Opening hours
Monday to Friday – 09:00 to 17:15