Christian Horner has accused one of Red Bull's F1 rivals of using "underhand" tactics to contact his team's sponsors during last year's fierce cost cap dispute.
Red Bull became embroiled in a cost cap controversy that dominated talk in the paddock last year as Max Verstappen cruised to his second world title. The FIA ruled that Horner's team were found to have breached the new spending limits introduced in 2021.
And Red Bull were eventually slapped with a £6.07 million fine and a 10% reduction in permitted aerodynamic testing time for overspending by £1.86m as the likes of Mercedes and Ferrari condemned the breach.
