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For teams Trusted by 1,900+ UK companies since 1998

Lean Six Sigma Training

Lean Six Sigma training for teams and professionals, from Yellow to Master Black Belt: onsite at your workplace, live online or in a classroom near you. The exam is included.

Get a team quote See course dates
  • Onsite at your workplace, or live online across sites
  • Examples and projects from your industry
  • One proposal and one invoice for the whole team
  • Exam and certificate for every delegate

72% of our delegates are sent by their employer

In short

SixSigma.co.uk trains teams and professionals in Lean Six Sigma, trusted since 1998 by 1,900+ UK companies. We run Yellow, Green, Black and Master Black Belt courses, plus Lean and Kaizen, onsite at your workplace, live online with a trainer, in a classroom in 88 UK locations or self-paced online. Belt courses take 2 to 15 days, and the exam is included.

  • 120,981+satisfied customers
  • Since 1998training UK teams
  • 88UK classroom locations
  • 2–15 daysper belt, exam included

Trusted by teams in

  • NHS and healthcare
  • Charities
  • Universities
  • Transport
  • Finance and insurance

For teams and organisations

Solutions for business

We’ll help you find your perfect 6 Sigma training solution. We know that the best results require a customised approach. That’s why we’re committed to understanding your needs and how your business works, before developing relevant training tailored to your industry and goals. We can deliver custom Six Sigma and Lean solutions onsite at your offices or a venue of your choice, covering the topics most important to your organisation.

Are you looking for a more substantial training programme? No problem, talk to us about what you’re looking for – we can even create bespoke content just for you.

Book a free consultation +442036084550
  • Onsite at your offices or a venue of your choice
  • Examples and projects from your own industry
  • Yellow Belt for whole teams, Green and Black Belts for project leaders
  • Group dates that fit around your operations

Case studies

How UK companies train their teams with us

Three recent company bookings. Client names are withheld to respect their confidentiality.

  • 40,000+delegates trained in Lean Six Sigma
  • 72%of delegates are sent by their employer
  • 1,900+companies have trained their staff with us
Engineering Green Belt

Green Belt for a whole team of 11

Team
11 people
Paid by
The company
Enquiry to booking
About 3 months

The brief

Train 11 people to Green Belt together, with one plan, one set of dates and one point of contact.

What they booked

Lean Six Sigma Green Belt for all 11, with the Yellow and Green Belt exams included.

Our advice: Training a team together gives everyone the same method and language for projects, and one group booking is far simpler to manage than 11 separate ones.

Defence engineering Green Belt

Making sure staff knew exactly what they would get

Region
South West England
Paid by
The company
Enquiry to booking
About 2 months

The question they asked

Will our people actually be Green Belt certified after the course, or does certification take years of project work? The training lead needed a clear answer to give participants and managers.

What they booked

Lean Six Sigma Green Belt for their team, once the answer was clear: the course ends with the Green Belt exam, and passing it earns the certificate.

Our advice: Some employers also ask for completed improvement projects over time. That is a separate, later step, so tell people up front what the course itself gives them.

Consumer health Mixed belts

Choosing the right belt for each technical team

Teams
Technical teams
Paid by
The company
Enquiry to booking
About 8 weeks

The brief

Compare the belts, the training options and the cost per person, so each technical team could be trained at the right level.

What they booked

Lean Six Sigma training for its technical teams, matched to what each team needed.

Our advice: Most organisations mix levels: Yellow Belt for everyone who supports projects, and Green Belt for the people who lead them.

Recent company clients include teams in defence, aerospace, consumer health, engineering and manufacturing.

Plan training for your team

Lean Six Sigma training courses

The two belts most people start with

Lean Six Sigma Green Belt

The most popular belt: for managers, analysts and team leaders who will lead improvement projects.

5 days Yellow and Green Belt exams Next start 9 Nov

Green Belt teaches you to run a complete DMAIC project: define a problem, measure the process, find the root causes with data, make changes and keep the gains. Green Belts usually lead projects in their own team alongside their day job, and support larger projects led by Black Belts. You do not need a Yellow Belt first. There are no formal prerequisites, and the course includes both the Yellow and Green Belt exams.

What you learn

  • Measuring a process and collecting data you can trust
  • Root cause analysis and the core statistics behind it
  • Control charts and plans that keep the gains in place

Included

  • 5 days of training with an experienced trainer
  • Delegate pack with courseware
  • Yellow and Green Belt exams
Green Belt dates Ask about Green Belt

Lean Six Sigma Black Belt

For people who will lead larger, cross-team improvement projects and coach Green Belts.

10 days Exam and certificate Next start 9 Nov

Black Belt goes deeper into the statistics, including regression and design of experiments, and teaches you to lead change and manage stakeholders across the business. Black Belts often work on improvement full time, help choose which projects the organisation runs and report the results to senior leaders. Already a Green Belt? The 5-day Black Belt Upgrade covers the extra Black Belt content without repeating what you know.

What you learn

  • Advanced statistics, regression and design of experiments
  • Leading change and managing stakeholders
  • Coaching Green Belts through their projects

Included

  • 10 days of training with an experienced trainer
  • Delegate pack with courseware
  • Exam and certificate
Black Belt dates Ask about Black Belt
Every Lean Six Sigma belt compared
BeltBest forTraining
Yellow Belt Anyone new to process improvement, and team members who support projects. 2 days, exam included
Green Belt Managers, analysts and team leaders who will lead projects alongside their day job. 5 days, exam included
Black Belt Improvement leads, engineers and managers who run larger, cross-team projects. 10 days, exam included
Black Belt Upgrade Green Belt holders who are ready to step up to Black Belt. 5 days, exam included
Master Black Belt Experienced Black Belts who will run an organisation's improvement programme. 15 days, exam included

How do I choose the right Lean Six Sigma course or belt level?

Pick what you want to do after the course and we'll show you the belt that fits.

After the course, I want to…

Why it matters

What is Lean Six Sigma and how can it benefit my career or organisation?

Lean Six Sigma: a short description

Lean Six Sigma is a proven, data-driven way to improve how work gets done. Lean removes waste so processes run faster; Six Sigma reduces variation so they make fewer mistakes. For you, it is a recognised qualification and a toolkit for solving problems. For your organisation, it means lower costs, shorter lead times and happier customers.

It works in any sector with a process to improve: manufacturing, the NHS, finance, logistics, the public sector and services. People use it to cut errors, waiting and rework, and to show the results in numbers.

Is Lean Six Sigma Green Belt Worth It: A Complete Guide DMAIC: 5 Steps of Lean Six Sigma Process Improvement Explained Is Six Sigma Worth It: A Complete Guide for Professionals Lean Six Sigma Salaries Across Top Countries: 2026 Guide

How Lean Six Sigma benefits your career and salary

Green and Black Belts move into continuous improvement, operational excellence, quality and project roles. A belt shows employers you can lead change with data, and Black Belt roles are usually paid more than Green Belt roles. Pay depends on sector and region, so see our salary guide.

How it benefits your organisation

Trained people find and fix the causes of errors, delays and rework. Each project is chosen for a business result and measured, so you can compare the savings with the cost of training.

Is Lean Six Sigma worth it in 2026?

Yes, for most people who work on processes, and it is still worth it because every organisation needs people who can fix problems with data. It pays off fastest when you use it on a real project soon after the course. If you won't, start smaller with Yellow Belt or a one-day Lean course.

Six Sigma explained

What is Six Sigma?

Six Sigma is a data-driven method for improving quality by reducing variation and defects in a process. Sigma (σ) is the statistical measure of variation, and a process running at six sigma produces no more than 3.4 defects per million opportunities.

Six Sigma meaning and definition in numbers

σstandard deviation: how much results vary
3.4defects per million opportunities at six sigma
99.99966%of outcomes defect-free

On the course: you measure how a real process performs and find what is causing its defects.

Lean and Six Sigma: how do they work together?

Lean and Six Sigma are two improvement methods that are usually used together as Lean Six Sigma. Lean makes a process faster by removing waste; Six Sigma makes it more reliable by reducing variation. Combined, they fix both slow and error-prone work with one shared method and one set of belts.

Lean versus Six Sigma: what is the difference, and is one better?

Lean

Speed and flow. Removes the 8 wastes.

Tools: value stream mapping, 5S, Kaizen, Kanban

Six Sigma

Quality and consistency. Reduces variation and defects.

Tools: DMAIC, statistics, control charts

Lean Six Sigma

Both, in one method and one set of belts.

Yellow, Green, Black and Master Black Belt

On the course: you learn to spot the 8 wastes in your own work and plan how to remove them.

Six Sigma methods: DMAIC and the 5 stages

The main Six Sigma method is DMAIC, five stages used to improve an existing process: Define, Measure, Analyse, Improve and Control. For designing a new process or product, teams use DMADV (Define, Measure, Analyse, Design, Verify), also called Design for Six Sigma.

What does Define mean in Six Sigma?

Define is the first stage: the team agrees the problem, the scope and a measurable goal before any work starts. Click a stage to see what happens in each.

Stage 1: Define

Agree the problem, the goal and the scope.

Write the problem down in numbers, who it affects and what “fixed” looks like, so the team and the sponsor agree on the target before any work starts.

You finish with: A clear problem statement and a target everyone has signed up to.

Tools you use

  • Project charter
  • SIPOC
  • Voice of the customer
  • Cost-benefit analysis

That is the overview. The course is where it clicks.

Your trainer takes you through every stage and tool with practice exercises, course materials and the exam, so you can use it on real work straight away.

Find your belt Get a team quote

Ways to learn

Classroom, live online, self-paced or onsite

The same belts in the format that fits your diary. Compare them, then ask us about the one you want.

Training formats compared
FormatHow it worksDurationExamBest forEnquire
Classroom Face-to-face with a trainer and a small group, in 88 UK locations. 2 to 15 days, by belt Included on belt courses Learning away from your desk, with time to ask questions Enquire
Live online A live virtual classroom with a trainer, on a set timetable. 2 to 15 days, by belt Included on belt courses Trainer support without the travel Enquire
Self-paced online Videos and exercises you work through when it suits you. 90 days access Ask us for details Busy diaries and learning in short bursts Enquire
Onsite for teams We train your team at your office or a venue of your choice. Scheduled around your team Included on belt courses Groups who want examples from their own work Enquire

How it works

What happens after you book

Pick how you want to learn, then click through each step, from your confirmation email to your certificate.

A live class with a trainer and other delegates, on Zoom, on set dates.

Step 1 of 7 Straight away

Book and get your confirmation

You receive an order confirmation email. Keep it as proof of your booking.

What you'll need

  • A laptop or PC with a reliable internet connection
  • Zoom, with a free account set up before day one
  • A quiet space; a webcam is optional for the training

Your learner portal

  • Sessions and trainer
  • Guides and workbooks
  • Exam requests and results
  • Certificates, any time

Ready to start live online?

Tell us your belt and dates, and we will send your options and a quote.

Get my options

Book your place

Upcoming Lean Six Sigma course dates

The next start date for each course. Book online, or ask us to hold a place.

Lean Six Sigma Green Belt Next Week
Monday 9 November 2026 5 days Live online
Book Enquire
Lean Six Sigma Yellow Belt Next Week
Monday 9 November 2026 2 days Live online
Book Enquire
Lean Six Sigma Black Belt Next Week
Monday 9 November 2026 10 days Live online
Book Enquire
Six Sigma Green Belt Next Week
Monday 9 November 2026 5 days Live online
Book Enquire
Six Sigma Yellow Belt Next Week
Monday 9 November 2026 2 days Live online
Book Enquire
Six Sigma Black Belt Next Week
Monday 9 November 2026 10 days Live online
Book Enquire
Live online courses · 19 courses

Can't make these dates? Tell us when suits you

Why SixSigma.co.uk

Why train with us?

At Six Sigma, we strive to offer the best training at the lowest price possible. Over 21 years of business, we have continued to provide high-quality training solutions to thousands of companies and businesses across the UK. Our trainers are industry experts who are highly experienced in planning and delivering quality management solutions using Six Sigma, Lean and Kaizen methodologies, and our courses are fully customisable to meet budgets, training needs and duration preferences. Our goal is to give you the best experience in the industry, which is why we have made our courses customisable for you, allowing you to ensure that you get the course that you require.

Bespoke solutions

We work with your business to provide the perfect learning solution for your needs.

Best quality

Our course material is designed to be engaging and clear.

Lowest price

We aim to provide maximum value and will beat any price on the market.

Expert trainers

Our trainers are handpicked subject matter experts in Six Sigma and Lean methodologies.

What our delegates say

A very easy booking process and a good opportunity to get a basis in Lean techniques. Well worth the money and time.
Daniel DelaneyBusiness Improvement Manger · Certified Kaizen Practitioner
I learned a lot on this course, and will be working hard to take the next level soon.
Sophie ThomasProject Manager · Six Sigma Green Belt
A very well-run course; informative and interesting. Top marks for quality!
Mike LockeyPerformance Improvement Consultant · Six Sigma Green Belt

FAQs

Questions before you book

Booking for yourself or a whole team? These are the questions people ask us most.

Which Lean Six Sigma belt is right for me or my team?

Start with what people will do after the course. Yellow Belt suits anyone who supports improvement projects, Green Belt is for people who will lead projects in their own area, and Black Belt is for those who lead larger, cross-team projects and coach others. Most organisations mix levels, and we can recommend the right mix for your team.

Can you train our whole team at our workplace?

Yes. We train teams at your offices or a venue of your choice, or live online when your people work across different sites. The examples and projects are tailored to your industry, and every delegate gets their own learner portal, exam and certificate.

How much does Lean Six Sigma training cost?

The price depends on the belt, the format and how many people you are training. Every belt course includes the exam. Ask us for a quote: we regularly offer up to 40% off, and a team gets one proposal for the whole group.

Can my employer pay, and do you invoice?

Yes. 72% of our delegates are sent by their employer. Organisations can book with a booking form and pay by invoice, and we can send a quote first for your approval process.

Is the exam included, and will I be certified?

Yes. Every belt course includes the exam, and passing it earns your certificate. Green Belt includes both the Yellow and Green Belt exams. Some employers also ask for completed improvement projects over time; that is a separate step you can work towards after the course.

How long does it take to get Lean Six Sigma certified?

Yellow Belt training takes 2 days, Green Belt 5 days, Black Belt 10 days and Master Black Belt 15 days. The exam is included on every belt course. Self-paced online courses give you 90 days to study at your own pace.

What is the fastest way to get Six Sigma certified?

Yellow Belt is the fastest route: 2 days with the exam included. If you need to lead projects, go straight to Green Belt (5 days). It has no formal prerequisites and includes both the Yellow and Green Belt exams.

Do I need any experience before Green Belt?

No. There are no formal prerequisites for Green Belt, so you do not need a Yellow Belt first. The course starts with the basics and includes the Yellow Belt exam.

What happens after I book a Lean Six Sigma course?

You get an order confirmation email straight away, then a second email to activate your learner portal. Your joining instructions and course materials follow before the course. Afterwards you request your exam in the portal, and your certificates are ready to download within 72 hours.

How do I join a live online course?

Live online courses run on Zoom. Your joining instructions and Zoom link arrive by email before the course, the link also shows in your learner portal, and it is sent again the Friday before as a backup. Set up a free Zoom account before day one; a webcam is optional.

How do I take the Lean Six Sigma exam?

After the course, request your exam in your learner portal within 30 days. Requests are answered the same day, and you then have 14 days to sit it online in the portal. It is a multiple-choice paper, and you get your result as soon as you finish.

When will I get my certificate?

Usually within 72 hours of your course ending or of passing your exam. Log in to your learner portal, open Booked courses, then Details, and download your completion and exam certificates.

Can I learn Lean Six Sigma on my own?

Yes. Our self-paced online courses give you 90 days to work through the material when it suits you. If you would rather have a trainer guide you, choose live online or classroom training.

Is Lean Six Sigma hard to learn or difficult to pass?

Yellow Belt is designed for beginners and needs no statistics background. Green and Black Belt include more statistics, but the course builds up to it step by step and your trainer prepares you for the exam.

Is Lean Six Sigma certification worth it in 2026?

Yes, if you will use it. A belt gives you a structured way to solve problems with data and a certificate that employers in manufacturing, healthcare, finance, logistics and the public sector recognise. It pays off fastest when you apply it to a real project at work soon after the course.

Why pay for training when free courses exist?

Free introductions can explain the ideas, but they rarely include a trainer, an exam or a certificate employers recognise. Our courses give you all three, plus course materials and support through your learner portal. We regularly offer up to 40% off, so ask for a quote.

Keep exploring

Related courses and guides

Every belt, the guides people read before they book, and where to train.

Lean Six Sigma courses

All courses

Lean and Kaizen

5S TrainingCertified Kaizen PractitionerIntroduction to LeanCertified Kaizen Foundation & PractitionerCertified Lean PractitionerCertified Lean Foundation & Practitioner

Guides

All guides

Lean Six Sigma training near you

Classroom courses in 88 UK towns and cities. These are the most popular.

LondonBirminghamManchesterAberdeenBelfastBrightonBristolCambridgeCardiffDublinEdinburghGlasgow All 88 locations

Let us know what you’re looking for

Not sure which belt or format to choose? Send a short enquiry and an adviser will help.

  1. Tell us the course, the format and how many people need training.
  2. An adviser contacts you by phone or email to recommend the right belt and format.
  3. You get dates and a quote, with up to 40% off where available.
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