Charity Governance, data protection & information governance, Organisational Strategy, Culture & Change Leadership

Debbie Harvie
BSc (Hons), MTh, DipC, MICA, FIoL

Debbie Harvie is the founder of Mission Impact and an experienced Chief Operating Officer and Chief Executive, with over two decades of leadership across the faith sector, charities, and community organisations. She specialises in church and charity governance, trauma-informed practice, organisational strategy, risk management, and culture and change leadership.Her work is shaped by a clear conviction: sustainable mission requires more than vision and passion—it requires strong structures, clear accountability, and leadership that can navigate complexity with integrity. Debbie brings a strategic and practical approach to helping organisations align their governance, culture, and operations in support of long-term impact.

Safeguarding governance, strategy & improvement, professional development & supervision, trauma-informed crisis support

Justin Humphreys
MSc. BSc.(Hons), PGCSM, DipCPP, FIoL, MIfS

With over 30 years of expertise and a proven track record of leading and guiding change within a wide variety of contexts, from charities and faith-based organisations to government and INGOs, Justin brings a deep understanding of complex systems and the human realities behind them. He provides independent, values-based guidance that aims to strengthen accountability, build trust, and foster safer, more resilient organisations and cultures.Justin has extensive experience in supporting a wide range of organisations within the UK and internationally who are concerned with creating safer cultures and environments for their staff, volunteers and those they serve.

executive coaching, professional development, trauma-informed support,menopause & mid-life support, crisis support

Arianna Walker
BEd (Hons), MSc, MBPsS,

With over 20 years of executive leadership experience, Arianna brings a strong understanding of the pressures and complexities of purpose-driven environments.Her work focuses on strengthening leadership resilience, communication, and organisational health, helping leaders navigate change with clarity and confidence. Arianna combines evidence-based coaching psychology with practical leadership insight, and is a certified Everything DiSC™ facilitator. Arianna also provides specialist coaching in menopause and midlife leadership, supporting individuals and organisations to better understand and respond to its impact in the workplace.

Our Collective Charter

Our Purpose

Kingdom Advisory Group exists to support churches and Christian organisations in strengthening governance, leadership, culture, and organisational practice.We recognise that many organisations lack the time or capacity to engage multiple specialists. This collective provides a trusted, relational gateway to aligned expertise, enabling leaders to access the right support with clarity, confidence and consistency.

Who We Serve

We serve:
- Churches
- Christian charities and ministries
- Faith-based organisations and networksOur work is grounded in a practical understanding of church life, leadership responsibility, and the realities of mission-led organisations.

Our Common Agenda

We are united by a shared commitment to support churches and Christian organisations to become operationally, psychologically, and spiritually safe, well-governed, and aligned to Kingdom mission, culture, and practice.We believe this is essential for:
- Healthy leadership- Safe communities
- Sustainable and effective missionKingdom Advisory Group provides a central point of connection through:
- Initial conversations
- Light-touch diagnostic insight where appropriate
- Guidance on the most suitable support
- Assessment of training needs or messagingFrom this point:
- Work may be delivered by an individual, qualified consultant
- Or through collaboration across the collective

Our Shared Commitments

As members of this collective, we commit to:
- Prioritising operational, psychological, and spiritual safety in all aspects of our work
- Working in ways that are non-coercive, trauma-aware, and respectful
- Acting with integrity, humility, and accountability
- Maintaining confidentiality and professional standards
- Signposting or referring where another consultant is better placed to serve

Our Statement of Faith

Kingdom Advisory Group is grounded in the Christian faith, which informs our approach to leadership, governance, and organisational life.We believe:
- In one God, revealed as Father, Son, and Holy Spirit
- In the life, death, and resurrection of Jesus Christ
- That every person is made in the image of God and is worthy of dignity, value, and respect
- That the Church is called to reflect the character of Christ in its leadership, relationships, and practice
- That leadership should be exercised with integrity, humility, accountability, and care
- That environments should be operationally sound, psychologically safe, and spiritually life-givingWe work with sensitivity and respect across a range of church traditions and expressions.

privacy notice

Kingdom Advisory Group respects your privacy and is committed to protecting any personal information you choose to share with us.If you contact us through this website, we may collect your name, email address, organisation name and any information you include in your enquiry. We use this information only to respond to your message, provide information about our services, and manage any follow-up relationship with you or your organisation.We will not sell your personal information or share it with third parties for marketing purposes. Information may be stored securely using the digital systems we use to manage email, website enquiries and business administration.We will only keep your information for as long as necessary for the purpose it was provided, or where we are required to retain it for legal, accounting or legitimate business reasons.You have the right to request access to your personal information, ask for it to be corrected or deleted, or object to how it is being used.To make a request or ask a question about how your information is handled, please contact us using the website form.Last updated: June 2026