Leadership isn't a title—it's a daily practice.
At DellonVille Global Associates, we believe leadership shapes culture, performance, and results. As a UK-based boutique consultancy, we deliver high-impact training and executive coaching for organisations that want growth through people development.
Our mission is to help you build behavioural intelligence and strengthen the daily practices that define your success. We transform potential into consistent, measurable impact through evidence-based methodologies.
What We Do
Practical, high-engagement programmes designed to create clarity, alignment, and momentum across your organization.
Executive Coaching
Personalized one-on-one sessions to sharpen leadership focus, enhance decision-making capabilities, and drive measurable personal growth.
Behavioural Assessment
Utilizing DISC insights and psychometric tools to surface communication styles, reduce team friction, and optimize collaboration dynamics.
Keynote Speaking
Inspiring sessions that combine storytelling, neuroscience insights, and actionable frameworks tailored to your audience's challenges.
Impact Training
Structured programs that translate learning into organizational action, creating sustainable behavioral change at every level.
How We Work
Our approach combines behavioural insight, strategic thinking, and facilitative leadership that keeps teams engaged and accountable. Every engagement is customised to your organization's unique culture and focused on outcomes that persist long after our work concludes.
We ensure leaders can respond with confidence and consistency by providing deeper self-awareness, evidence-based tools, and measurable progress tracking. Success is defined by your organizational growth, not just workshop satisfaction.
Why Organisations Choose Us
Expert Faculty
Certified professionals with decades of real-world leadership experience across multiple industries and geographies.
Tailored Delivery
Every engagement is customized to your industry context, organizational maturity, and specific strategic objectives.
Practical Tools
Usable, science-backed frameworks that people can apply immediately to solve real challenges and drive results.
Global Reach
Based in the UK with deep expertise in African and European markets, serving clients across continents with cultural fluency.
Guiding Excellence
Our leadership team brings decades of combined experience in executive coaching, organizational development, and behavioral science.
Stallone-Obaraemi Samuel
Chartered MCIPD, MCIPMStallone-Obaraemi Samuel is a globally experienced organisational change consultant and executive coach with nearly two decades of leadership across public sector institutions, multinational organisations, and strategic partnerships. A Chartered Member of both the CIPD (UK) and CIPM (Nigeria), he brings a rare dual perspective to people strategy, talent development, and workforce transformation. With a background in HR transformation and programme management, Stallone-Obaraemi blends operational rigour with behavioural insight to drive culture change, embed values-led leadership, and enable high-performing teams. His work is grounded in strategic thinking and behavioural science, helping organisations navigate change while strengthening cohesion, communication, and leadership capability. As a Certified Maxwell Leadership Coach and Behavioural Analysis Trainer, he specialises in coaching leaders to communicate with clarity, lead with authenticity, and foster environments of trust and collaboration. His facilitation style is engaging, practical, and results-driven, designed to unlock potential and deliver measurable impact. Stallone-Obaraemi also brings deep expertise in public speaking and executive presence, having coached professionals across industries and served in leadership roles within global communication networks. His coaching programmes are tailored for SMEs and growth-focused organisations seeking to scale leadership capacity and build resilient, connected teams. At DellonVille, Stallone-Obaraemi serves as Strategic Faculty Lead, guiding the development of leadership, communication, and behavioural training programmes that empower organisations to thrive in dynamic environments.
Gerry Dunn
Head of Behavioral ScienceGerry Dunn is a seasoned mediation and communication expert with over two decades of experience helping individuals, teams, and organisations navigate conflict, improve dialogue, and build stronger working relationships. As a registered mediator with Scottish Mediation, Gerry has worked extensively across the public, private, and third sectors, supporting small and medium-sized enterprises (SMEs) in resolving workplace disputes, enhancing team dynamics, and fostering collaborative cultures. His approach is rooted in empathy, clarity, and a deep understanding of human behaviour. Gerry’s background includes significant leadership roles in education and community development, where he has led diverse teams and facilitated complex conversations around change, inclusion, and performance. His ability to create safe, respectful spaces for dialogue makes him a trusted partner for organisations seeking to reduce conflict and improve communication at all levels. In addition to his mediation work, Gerry is a skilled trainer and facilitator, delivering workshops on conflict resolution, effective communication, and leadership development. His sessions are known for being practical, engaging, and tailored to the real-world challenges faced by today’s professionals. Gerry’s mission is simple: to help people talk, listen, and work better together. Whether supporting a team through a difficult transition or coaching leaders to communicate with greater impact, he brings a calm, solutions-focused presence that inspires trust and drives results.
Kate Onakomaiya
Managing Director, AfricaKate Onakomaiya is a dynamic leadership coach and communication strategist with over 24 years of experience spanning corporate leadership, project management, and entrepreneurship. She is known for her people-centred approach and her ability to help leaders and teams unlock their full potential through practical, values-driven development. As a Certified Bilingual Coach and Training Consultant, Kate works with mid- to senior-level professionals across industries and geographies; delivering coaching and consulting services in both English and French. Her work focuses on strengthening leadership presence, improving communication, and fostering team cohesion to drive sustainable success. Kate’s coaching philosophy is rooted in helping individuals and organisations harness their strengths, build interdependent teams, and create environments where people thrive. Her clients consistently report increased clarity, confidence, and performance—both personally and professionally. She is the author of The Growing Life and brings a global perspective to her work, having partnered with leaders across Africa, Europe, and beyond. Her facilitation style is engaging, insightful, and grounded in behavioural science.
Maria Warren, Chartered MCIPD
Director of Executive CoachingMaria Warren is a seasoned HR strategist and wellbeing coach with over 30 years of experience in people management, leadership development, and solo parenting advocacy. As a Chartered Member of the CIPD, Maria brings a unique blend of corporate HR expertise and personal insight to her coaching practice, supporting individuals and organisations in building healthier, more human-centred workplaces. Her approach is rooted in practical, preventative people leadership. Maria specialises in coaching business owners, leadership teams, and managers to create psychologically safe environments, reduce workplace conflict, and foster cultures of dignity, respect, and accountability. She is known for translating policy into practice; empowering leaders to lead with clarity, compassion, and confidence. Maria’s work spans preventative HR training, solution-focused coaching, and restorative support for teams navigating change, conflict, or formal HR processes. Her workshops cover topics such as employment rights, psychological safety, equity and inclusion, and leadership behaviour, delivered both online and in team settings. In addition, Maria is a passionate advocate for solo parents. Drawing from her own lived experience, she coaches and mentors solo caregivers to rediscover their aspirations, build resilience, and create thriving home environments. Maria serves as a faculty member focused on wellbeing, leadership culture, and restorative coaching, helping clients build workplaces where people flourish.
Ready to Transform Your Leadership Journey?
Join thousands of professionals who have accelerated their careers with DellonVille's evidence-based leadership development. Let's discuss how we can customize a program for you or your organization.