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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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Best-in-Class Six Sigma Training
Benchmark stands out as one of the best in the industry for Six Sigma training programs. The concepts were explained clearly and thoroughly, and the trainerβs sessions were highly engaging and effective. I gained strong knowledge from the Lean Six Sigma Green Belt course and found the overall learning experience extremely valuable. Thank you for delivering such a high-quality and impactful program.
Lean Six Sigma Green Belt
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Business-Oriented Analytical Mindset
The BVA course significantly upgraded my way of thinking about business performance. It helped me clearly understand how operational metrics are directly connected to business growth, strengthening my perspective on using data and analytics to drive strategic and value-based decisions.
Business Value Analyst
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Strong Foundation in BVA and Finance
The course provides valuable insight into Business Value Analytics (BVA), company financial metrics, the language of finance, and the Theory of Constraints. These topics are well integrated and clearly explained, helping build a strong foundation in financial thinking and analytical decision-making for business improvement initiatives.
Business Value Analyst
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Ideal Course for Operational Excellence
The LSSGB course from Benchmark Institute is highly recommended for professionals seeking to enhance and elevate their Operational Excellence capabilities. It is thoughtfully designed for mid to senior-level professionals who aspire to make a meaningful impact in the field of continuous improvement and successfully transition their careers toward structured problem-solving and performance excellence.
Lean Six Sigma Green Belt
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Highly Valuable Online Learning Experience
I learned many new models, concepts, and methods through this well-structured online session. The training was highly useful and contributed significantly to my career growth. Benchmark delivered one of the best online learning experiences, making complex topics easy to understand and apply effectively.
Lean Six Sigma Green Belt
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Relevant and Impactful BVA Learning
The BVA course is highly relevant to the evolving role of a Master Black Belt. The instructions, training materials, and practical exercises were extremely helpful in strengthening understanding and enhancing the business analyst role. The structured approach and hands-on learning made the concepts easy to grasp and directly applicable, adding strong value to professional growth and decision-making capability.
Business Value Analyst
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Clear and Easy Learning Experience
The content was easy to follow and explained in a simple, well-structured manner. The clear presentation made complex concepts more approachable and ensured smooth understanding throughout the learning process.
Lean Practitioner and Lean Guide (Self Paced)
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Well-Structured, Practical DMAIC Learning
The course was well structured and demonstrated strong coordination from Day 1 through completion. It provided a solid foundation in DMAIC, which can be effectively applied as a tool for continuous improvement in the workplace. The flow of concepts and practical examples was well aligned, making learning seamless and meaningful. The statistical tools introduced were highly valuable and strengthened problem-solving capability through a data-driven approach.
Lean Six Sigma Green Belt

