Timeline
Key dates in the inquiry's progress, assembled from its recorded milestones and hearing phases.
Hearing-phase dates are taken from the published hearing days; some earlier milestone dates are approximate where the inquiry has not published an exact date.
Milestones & hearing phases
Milestone
Hearing phase
Reports & costs
Still to come
Procedural / preliminary hearing
7 sitting days
Evidential hearings
24 sitting days
Open hearings concluded
The open hearings concluded after evidence in Salisbury and London. Closed hearings with oral evidence followed; the Inquiry later confirmed their conclusion, but the exact last closed sitting date was not published.
Closed hearings completion confirmed
The Inquiry notified participants that the closed hearings had concluded. This records the confirmation date, not an asserted last sitting date.
Reported costs: £8m
Dawn Sturgess Inquiry Financial Report - April 2025 – September 2025 (Total to Date / cumulative lifetime costs)
Report Published
Inquiry report published, concluding Putin bears "moral responsibility" for Dawn Sturgess's death.