Your most important projects deserve the right expertise
Project Delivery, Assurance, and Advisory Services
I work with senior leaders across government and financial services who are accountable for complex, high-stakes programmes. With nearly 30 years of delivery experience, from UK government, law enforcement and defence to public sector and financial services across the Channel Islands, I bring the structure, clarity, and independent judgment that critical programmes demand.
Trusted by leading organisations across the Channel Islands and other jurisdictions, including government bodies
Welcome, I’m Sean
I’m a data-informed business change consultant, specialising in high-risk projects and complex transformation programmes. I also work as a course trainer, helping project professionals build capability and confidence.
In an uncertain world, the right process matters.
My role is to give you oversight—bringing clear, bias-free data and grounded recommendations into the boardroom, so you can take control of change and reduce the risk of failure.
Let’s deliver change faster together
When your organisation is in flux and you’re accountable for a high-profile change programme, pressure builds quickly. I help you identify risk early and provide the insight you need to influence confidently—up, down, and across the organisation.
I make complex decisions easier
Our work goes beyond on-time, on-budget promises. I act as your advisor, ally, and advocate—supporting your long-term objectives while keeping a firm grip on day-to-day delivery.
How I can help you…
I’m a Programme Sponsor or Director looking for a Change Management Consultant
I’m a new Project Manager looking to develop my skills
Advisory Services
Independent guidance and oversight for organisations delivering complex transformation programmes.
Reviews
★★★★★
“Sean is a strong Programme and Project Manager, drawing on practical knowledge and hands-on experience. His approach and experience make him an obvious choice for any challenging assignment.”
Andrea, States of Guernsey.
★★★★★
“We worked with Sean at a time when our programme of work was experiencing a significant amount of change, in staff and direction. He quickly acquired a deep understanding of the project intricacies and the stakeholders involved, and delivered on the outcomes”
Ellie, Civil Servant
Selected Projects
A snapshot of programmes delivered across the Channel Islands and beyond.
Trust Company Transformation | Channel Islands
Full business transformation of a Channel Islands trust company — platform, people, and process.
18 months | £5m | 3 jurisdictions | 50 staff
Delivered complete replatforming of core trust systems, business process reengineering, billing model redesign, and organisational restructure. The outcome was a fundamentally more efficient, competitive, and resilient business.
Banking Transformation | Channel Islands
Core banking system replacement and full organisational transformation.
24 months | £25m | 4 jurisdictions | 150 staff
Full replacement of core banking platform with Temenos T24 across four jurisdictions, driving organisational transformation and positioning the organisation for long-term growth and regulatory resilience.
Secondary Education Transformation | States of Guernsey
Consolidation and modernisation of Guernsey’s secondary school system.
3 years | £6m | 280 staff | 500 students
Consolidated four secondary schools into three, creating a unified secondary education system with standardised curriculum, improved processes, and significant cost efficiencies.
Digital Evidence Transformation | Crown Dependencies Police Force
Delivery of a complex digital evidence programme for a Crown Dependencies law enforcement agency.
NPPV Level 2 cleared | Ongoing delivery | Law enforcement digital transformation
Latest Articles & Insights
Why Most Transformation Programmes Fail Before They Start
Sean Petralia discusses why most programme failures start before delivery begins. Discover why unclear objectives, weak governance, unmanaged risks, and invisible sponsors derail success from the outset.
The End of Transactional Consulting: Why Building Capability is the Only Metric That Matters
As a professional project manager with nearly 30 years of experience both as a client and as a consultant, I have both good and bad experiences of this relationship. When I started Maroon Consulting, my aim was to move beyond a standard transactional relationship...
Decoding Success: Unleashing the Power of Data Analytics for Project Insights
Data analytics is a powerful tool allowing for greater insights into our business, local and global environments. It offers enormous potential for project professionals that potentially will lead to more informed decisions, more...
