Since 2021, billionaire Larry Ellison's personal foundation has donated or pledged at least £257m to the Tony Blair Institute.
This took the former PM's think tank to a whole new level: it now has over 900 staff and is working across at least 45 countries.
But who, exactly, does it work for?
Will Lloyd is joined by Peter Geoghegan and May Bulman whose investigation into the TBI was published in The New Statesman this week