Powering Change. Accelerating Modernisation.
At Quantum Six, we’re redefining what it means to be a consultancy in financial services.

As the go-to specialists for ecosystem advisory and core banking transformation, we partner with banks, financial institutions, and fintechs to shape bold, modern strategies — always with independence, clarity, and confidence.

Our expertise spans technology and business strategy, target operating model design, vendor selection, change strategy, and programme assurance. Whether you're modernising a core platform or navigating a complex ecosystem, we bring deep insight, execution experience, and vendor-agnostic advice to drive success.

Our services
• Architecture
• Consulting Delivery
• CXO Advisory
• Ecosystem Advisory
• Programme Support

Banking

Consulting

FinTech

Quantum Six

The London office specializes in strategic consulting and operational excellence, serving diverse enterprise clients.

London

Mark McGrath

This department provides expert advice and support to organizations in various areas of management and operations.

Consulting Services

This department focuses on building and managing relationships with partners and alliances to drive enterprise solutions and marketing initiatives.

Ecosystem Development

This department provides strategic direction and governance for the organization.

Executive Leadership

This department guides the organization by setting strategic direction and overseeing overall operations.

Quantum Six

Org chart

Teams

Consulting Services

Ecosystem Development

Executive Leadership

Leadership

Offices

Quantum Six

Org chart

Teams

Consulting Services

Ecosystem Development

Executive Leadership

Leadership

Offices

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