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Zellis
Building Capability at the Core of Payroll and HR Services
As a leading provider of payroll and HR solutions in the UK and Ireland, Zellis operates in a domain where accuracy, compliance, and service consistency are critical. Our engagement brought us into teams focused on strengthening internal problem-solving capabilities, improving process alignment, and supporting a culture of continuous improvement across operations. The commitment to excellence in delivery was matched by a clear intent to invest in scalable internal capability.
It was a privilege to work with professionals who brought diligence and purpose to every initiative. Their openness to structured thinking and collaborative improvement made this engagement both impactful and future-focused.
Testimonials for Benchmark Six Sigma
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Exceptional Six Sigma Black Belt Experience
“The Six Sigma Black Belt course by Benchmark Six Sigma was an exceptional experience. The comprehensive curriculum, expert instructor, and practical approach exceeded my expectations. I now feel equipped to drive process improvements effectively. Highly recommended for anyone seeking to master Six Sigma methodologies.”
Lean Six Sigma Black Belt
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Instructor’s Simple Examples Made Learning Easy
“I have completed both my certifications that is Green Belt followed by Black Belt from Benchmark. Being from a totally different background, the instructor with his simple examples made it an extremely easy process. The content and method of delivery are excellent.”
Lean Six Sigma Black Belt
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Victor Kolo
20/08/2023
Head Of Operations, Premier Feed mills Co.Limited
Personalized and Satisfactory Training Experience
“The training is very personalized and very satisfactory. The problem is the time zone difference with me in Nigeria, as I have to wake up very early to meet the meeting.”
Lean Six Sigma Green Belt
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GANESH KUMAR PJ
20/08/2023
Helpful Training on Six Sigma Standards with Deep Overview
“The entire training was really helpful in understanding the Six Sigma standards and its effect in all sectors, especially in manufacturing, in which I work. Also, the trainer gave a deep overview of the same, and it was very effective.”
Lean Six Sigma Green Belt
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Vishwadeep Engages Everyone with Detailed Explanations
“Vishwadeep is one of the best tutors from Benchmark Six Sigma. The way he engages everyone and gives a detailed explanation. He doesn’t hesitate to explain multiple times when you ask doubts, and he makes sure to add something funny during class so we all have a good time while we are learning. Simply amazing.”
Lean Practitioner and Lean Guide
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Vishwdeep Khatri Delivers Invaluable Lean Training Session
“Once again, Vishwdeep Khatri delivered a fabulous training session on Lean, meticulously covering every minute detail. The training included comprehensive explanations and practical simulation exercises, making it an incredibly valuable learning experience.”
Lean Practitioner and Lean Guide
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Sangita Palod
13/08/2023
Program Director, Piramal Foundation
Well-Curated Virtual Learning with Diverse Examples
“The learning experience was well-curated for virtual connects and different types of learners. Examples from different sectors helped. Thank you Vishwadeep.”
Lean Practitioner and Lean Guide
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Concise and Focused Program Provided Enlightening Insights
“The program is designed in a very concise and focused manner, making it highly effective and easy to follow. I found the content to be exceptionally enlightening, providing clear and direct insights that greatly enhanced my understanding. Going through this program has been an invaluable experience, offering a wealth of knowledge in a streamlined format.”
Lean Practitioner and Lean Guide

