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We are CMSPI

Our Story

The go-to payments advisors for leading retailers around the globe.

CMSPI is the global advisory firm that finance, payments and fraud teams turn to when they want to boost performance, navigate the market, and grow their businesses. Our payments experts use proprietary technologies to equip clients with data-driven insights to achieve best-in-market results through more legitimate transactions, with less fraud, all at a market leading cost.

Our Story

In 2011, after a career advising banks and merchants on improving payments, Brendan Doyle, Founder & CEO, set out to build a business that would change the global retail payments landscape for the better. The result is CMSPI; using a unique combination of knowledge, data and technology to improve the productivity of payments. This means a better outcome for merchants, payments companies and, ultimately, consumers.

Since then, CMSPI has become the go-to advisory firm for leading merchants across the globe, looking to supercharge their payments arrangements. In 2021, Inflexion, a global private equity firm, invested in our vision, helping to fuel our growth and develop new technologies that will drive future improvements in payments productivity.

Prashani Samaraweera

Brendan Doyle


We want to create a win-win-win for payments firms, retailers, and their customers. Our mission is all about making payments more productive and therefore – most importantly - helping our clients be successful and grow their businesses.

Our Leadership Team

John Kerr image

John Kerr

Chairman of the Board
Brendan Doyle image

Brendan Doyle

Elley Frost image

Elley Frost

Richard Kyne image

Richard Kyne

SVP, Global Consultancy
Karolina Tallar image

Karolina Tallar

Global CFO
Beth Ward image

Beth Ward

Chief People Success Officer
Alistair Matthewson image

Alistair Matthewson

SVP, Global Delivery
Alex Ellwood image

Alex Ellwood

SVP, Marketing & Insights
George Willis image

George Willis

SVP, Global Business Development
Liz Garner image

Liz Garner

SVP, Head of Strategic Partnerships
Sam Appleby image

Sam Appleby

SVP, Business Development Director

Our Latest Insights

  • Events

Fueling Your Payments Strategy: Cost Optimization Insights for Gas & Convenience Merchants

Join us for a special Townhall tailored exclusively for our gas and convenience store community. CMSPI’s payments experts will provide a glimpse into the data-driven insights and trends we’re seeing across the gas industry. We’ll explore the latest changes in debit costs and how to mitigate any impacts without adding friction to the customer experience.

  • Events

CMSPI Workshop: A Deep Dive on Debit

Location: Santa Monica, CA. CMSPI’s workshops are designed to help payments professionals gain a deeper understanding of the latest trends in the industry and learn strategies for finding cost-saving opportunities. 

  • News

The Credit Card Competition Act Could Result in Annual Savings Upward of $11 Billion

CMSPI estimates pro-competitive policies on U.S. debit have saved merchants and consumers billions