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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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Awesome Training with Great Course Material
“Training was awesome, and the course material too. “
Lean Six Sigma Green Belt
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Ishwari
13/08/2023
Group Manager, Midland credit management
Thank You to Trainer; Session Cleared Doubts
“Thank you so much to Mayank and team. The session was amazing and cleared a lot of doubts.”
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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Pradeep Shukla
07/08/2023
Manager, Bunge
One of the Best MBB Trainings Attended
One of the best MBB training. Thank you for a great course. Great presentation style with lots of opportunities to ask questions and talk about real-life examples which all made for a really enjoyable and informative course. This has more than met my expectations. A wonderfully practical course and a Great trainer!
Business Excellence Master Black Belt
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Ankur Sarkar
07/08/2023
Associate Director, UnitedHealth Group
Comprehensive MBB program with engaging sessions
Comprehensive Content. The entire MBB program was designed to include comprehensive content from both sides of the Lean Six Sigma and Digital Transformation world. VK with all his experience made the program delivered in a well-structured manner and was able to effectively convey complex concepts incl. real-world examples, making the sessions very engaging.
Business Excellence Master Black Belt
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Good Training; Suggests More Time for Doubt Clarification
“Training was good and the trainer had good knowledge. However, the duration should have been a bit more for doubts clarification, perhaps 30 minutes.”
Benchmark Six Sigma (SP)
Lean Six Sigma Green Belt

