Upcoming Events
  1. Lean Six Sigma Black Belt training and certification (8-day)

    November 13 - December 6
  2. Lean Six Sigma Black Belt (3-day upgrade) Zoom: Dec 4th- 6th 2023

    December 4 - December 6
  3. Lean Six Sigma Green Belt Certification :  Zoom training 5-day event: Dec 18 – Dec 22 2023

    December 18 - December 22
  4. Lean Six Sigma Yellow Belt with International Accredited Certification :  Live Zoom training: Jan 8th – 9th 2024

    January 8, 2024 - January 9, 2024

Date:   April 2016

From:  IT Manager,  Gateshead, UK

Many thanks for that, great news indeed about passing!!

Great course and very well taught….. I’m sure we’ll have 2 more passes in May.

Best regards, Ian!

Date:   March 2016

From:  Business Analyst,  BCV Bank, Switzerland

Hi John,

It’s really great news that I passed !! I’m very satisfied and happy for Nelly too. But primary it’s your merit to transfer us all this knowlegde in so little time. You are a great teacher and I really appreciated every moment of the training.

Laussane, Switzerland

Date:   January 2016

From:  Chemical Manufacturing Operations Manager 

Very much enjoyed the class and very happy to have passed my Green Belt.  Thank you for all your help.   Hope to take the Black Belt later this year !

Operator from Aesica Pharmaceuticals,  Cramlington

Date:   November 2015
From: Programme Office Management Consultant, Scotland

Just a quick email to say thanks again for your ‘patience’ this week. As I said earlier it was really pleasant to get value for money at one of these courses for a change.

Colin ( Idependent Management Consulant,  Glasgow, Scotland )

Date:   October 2015
From: Manager for Airport Management accounting services

Congrats on running a well structured and well delivered course.   I will hopefully see you again for Black Belt training very soon.

Operationa; Excellence Manager,  Shared Services Centre

Date:   September 2014
From:  BA for Messenger Software company

I received an email today requesting a reference and I have sent that off.

I have replied to the questions honestly and indicated that my learning experience with you as a course instructor was a very good one and that I would certainly recommend your services.

Best wishes,

Peggy,   Software Development Manager

Date: August 2014

From: Project Manager of Swiss Pharmaceutical Multi-National

Just wanted to say thanks a lot for the class this week.  I enjoyed it and got a lot out of it.
Take care.


Date:   May 2014
From: A North East County Council Process Improvement Team Leader

Hi john

Thank you for a very good week.

I was really pleased that I passed the Black Belt, so thank you!  I look forward to being able to apply what I’ve learnt in my current occupation and planning for the future outside of local authority !

Hope all continues to go well for you.

Best wishes,

( Name withheld )

Date:   Jan 2015

From: Project Manager,  an International Pharmaceuticals Company

John Dennis provided both Lean 6 sigma green belt and black belt training for me during the second half of last year in September and October.

John’s class fully met my expectations and the duration of the course was about right – sometimes more feedback from the participants would have improved the class but this is really down to the participants, the class certainly benefits from having students who participate fully in the various discussions that John initiates.

John was always fully knowledgeable about Lean and 6 sigma and he always found a way of explaining the various concepts to both technical and non technical students. He was able to answer all questions from the participants and made the class both enjoyable and rewarding to all concerned.

I have no hesitation in recommending John as your Lean 6 sigma trainer and I believe that your BAs and your PMs would benefit from John’s classes, in fact some form of Lean 6 sigma training would be useful across the whole of the organisation.

I have found that some of the tools introduced to me as part of the training useful particularly those which helped with metric driven decision making.