Interim CEO · Interim COO · Operating Partner

Recover control.Revalue assets. Release value.

I am brought in when an organisation loses leadership, meets an unpriced capability barrier or requires recovery before value erosion becomes irreversible.

I establish the real condition, align authority with the Chair, board or sponsor and convert strategy into sustained execution where the consequences are materially operational, financial or institutional.

Intervention · Pace · Recovery · Transformation · Special Situations

Portrait of Steven Windmill
Steven M Windmill TD MBA BA(Hons) FRSA
£18.6bnSovereign-scale transformation81 organisations · 23,000 staff · 54 sites
£4.33bnSavings delivered through the transformationRealised programme outcome
100 daysPositive EBITDA restoredRegulated commercial turnaround
1,200 → 6Projects integratedFrom fragmentation to controlled programmes

Direct accountability without making the institution dependent upon the intervention.

Steven works to the outcomes, authority and constraints agreed with the Chair, board or sponsor. He uses existing leadership wherever capability and alignment remain sound, distributes execution through trusted leaders and intervenes directly where evidence shows material loss of control, value or institutional confidence.

The objective is a stronger institution: restored commercial and operating control, decision-grade governance, capable leadership and an orderly transition to sustained performance.

Principal identity and method →
“Steven brings tremendous value to our board… a highly focused executor, who gets straight to the bottom line.”
Jean-Philippe Perraud
Public LinkedIn recommendation — Board colleague
“A strategic thinker with the pragmatism to turn strategy into detailed plans.”
Fred Church
Public LinkedIn recommendation — Defence Training Rationalisation programme
“Supportive and encouraging leader… would gladly work for him again.”
Nigel Smith
Public LinkedIn recommendation — Professional colleague

Formal reports and professional recommendations show a consistent pattern across employers, clients, commanders, board colleagues and peers: clarity of thought, commercial judgement, calm execution, high integrity and a leadership style that enables others to perform. References and recommendations →

Corporate recovery

Performance without control

Value deteriorating despite apparent effort, requiring rapid diagnosis, restored authority and disciplined commercial execution.

Integration and transformation

Scale without coherence

Organisations, assets and programmes requiring a credible operating model, integrated authority and post-merger execution.

Governance and consequence

Information without foresight

Boards receiving data but lacking the predictive indicators and intervention architecture required before optionality disappears.

Primary commercial focus

One external Interim CEO, Interim COO or Operating Partner mandate at a time

Selectively available for one high-consequence external mandate at a time, alongside a limited portfolio of principal, Chair and non-executive responsibilities.

Mandate fit and current focus →
Permanent institutional platform

Windmill Family Office

A UK single family office providing governance, stewardship and succession architecture for family capital, assets, relationships and responsibilities across generations.

Visit WFO →