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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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Karthikeyan.N
24/03/2019
Manager, Intelenet Global Services
Detailed Explanations and Individual Attention
“The detailed explanations were very helpful. The instructor’s attention to each individual candidate was impressive.”
Lean Six Sigma Black Belt
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Rajalakshmi Sakthivel
24/03/2019
Sr. Manager, Visionary RCM
Clear teaching with good examples made concepts easy
“The teaching was clear and well-explained, with good examples. The clarity in teaching made complex concepts easy to understand.”
Lean Six Sigma Black Belt
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Vignesh N Raj
24/03/2019
Manager – Customer Care, Redisolve Software Private Limited
Commendable Patience and Explanation by Instructor
“The patience and explanation provided by the instructor were commendable. I highly recommend Benchmark for certification due to their detailed and patient teaching approach.”
Benchmark Six Sigma (SP)
Lean Six Sigma Black Belt -
Lurthu Leo M
24/03/2019
Zonal AR Controller, Nuvoco Vistas Corp. Limited
Beneficial Faculty; Benchmark Excels in Excellence
“The faculty and real-time examples provided were very beneficial. Benchmark excels in process excellence and engineering.”
Lean Six Sigma Black Belt
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Thangarajan Manickam
24/03/2019
Senior Manager, Visionary RCM
Learned methodologies to stabilize and improve processes
“I learned new methodologies and techniques for keeping the process stable and successful. Benchmark is a great place to gain valuable insights.”
Lean Six Sigma Black Belt
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Santosh Kumar Nandi Duli
17/03/2019
Senior Manager, Thermo Fisher Scientific
Excellent Minitab tools and knowledgeable instructors
“The statistical tools, capability of Minitab, and the knowledge and teaching methods of the instructors were excellent. Benchmark’s tutors have significant knowledge of a range of statistical tools and their application in a DMAIC environment.”
Lean Six Sigma Black Belt
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Ravneet Singh Anand
17/03/2019
AVP-Process Optimisation Consultant, HSBC
Practical Examples Aided Understanding Tools
“The practical examples and cases used to drive understanding of the statistical tools and designs were very helpful. I had a wonderful time understanding and learning the concepts of Six Sigma with a great group and an excellent instructor. Thanks to Benchmark Six Sigma.”
Lean Six Sigma Black Belt
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Senthil Murugan Packiam
17/03/2019
AVP, First Level Support, Thomson Reuters
Informative sessions provided solid foundation
“The overall session and materials were very informative. They provided a solid foundation for understanding and applying the concepts.”
Benchmark Six Sigma (SP)
Lean Six Sigma Black Belt

