French GP2 driver Pierre Gasly and American GP3 driver Santino Ferrucci will perform testing duties for Red Bull Racing and Haas respectively next week, during the post-British Grand Prix test.
Gasly has been on the Red Bull Junior programme since joining Arden International's Formula Renault 3.5 outfit in 2014. He took part in the post-Spanish GP test for Toro Rosso in May, but will jump into the senior Red Bull cockpit in Silverstone.
The Frenchman has had a decent season in GP2, taking Pole position at the first race of the season in Barcelona, and notching three podiums along the way. A first victory, however, still eludes him.
Meanwhile, Ferrucci will take over the Haas seat after the race weekend, where fellow GP3 driver Charles Leclerc will take part in FP1 for the American outfit.
Ferrucci, who is still searching for his first points-scoring finish in GP3 after four races, will become the first American driver to turn a wheel in the Haas VF-16.
The pair will be joined by European F3 duo Nikita Mazepin (Force India) and Sergio Sette Camara (Toro Rosso) at the test, with DTM driver Esteban Ocon testing for Mercedes.
The test will take place on July 12-13, the Tuesday and Wednesday after the British Grand Prix.