McLaren will bring the most extensive upgrade package of any front-running team to the British Grand Prix at Silverstone this weekend, as seven of the 11 Formula 1 squads prepare new parts for Round 9 of the 2026 season, according to official FIA documentation.
The reigning world champions have listed changes to both the front corner and floor furniture. A new front brake duct has been introduced, which the team says is aimed at delivering “improved flow conditioning and gain in aerodynamic load,” while a revised floor board targets “improving flow physics and a gain in overall efficiency.” The Sprint format also returns at Silverstone, adding urgency to teams’ development timelines.
Ferrari and Red Bull are each bringing single-area updates. Ferrari will run an updated rear corner featuring increased cooling inlet and outlet sections, an updated lower deflector, and a re-optimised rearward winglet cluster, all targeting improvements in local load and cooling performance. Red Bull, who delivered a particularly significant upgrade package at their home event in Austria, are limiting their Silverstone changes to an updated rear corner, with revised cascade wings in the rear wheel bodywork winglets designed to “improve the load characteristics and stability.”
Racing Bulls have introduced an updated floor corner and diffuser geometry aimed at generating “more load and provide increased performance,” along with a new forward deflector geometry on the rear corner to improve local flow conditioning and floor performance. Haas, whose driver Ollie Bearman recently suggested the squad had been “out-developed” by their rivals, will debut two updates. The team’s rear wing profiles have been “comprehensively revised” to improve local load performance, while the rear wing endplates feature new external protrusions targeting better flow conditioning.
Williams are bringing a new front wing geometry for their home race, featuring updated profiles and endplate surfaces designed to “generate an increase in local loading combined with an improved flow field interaction with downstream components.”
Four teams will run unchanged machinery at Silverstone. Mercedes, who introduced updates in Austria, have opted not to bring new parts. Alpine and Audi have submitted no upgrades. Aston Martin, the other home team on the grid, confirmed they are saving their resources for a significant upgrade package planned for the Hungarian Grand Prix. Cadillac, who delivered a sizeable list of updates in Austria, will also hold steady this weekend.
The development race has become a defining narrative of the 2026 season, with teams balancing the cost cap against the need to bring performance gains at a rapid pace. Silverstone’s high-speed layout, featuring fast corners such as Copse, Maggotts, and Becketts, places a premium on aerodynamic efficiency and stability — precisely the areas most teams are targeting with their latest modifications.