GP3 championship leader Tio Ellinas's Formula 1 test debut with Marussia has been confirmed for day one of the young driver sessions at Silverstone.
The 21-year-old Cypriot earned the chance by being the affiliated Manor team's top scorer in GP3 last year.
Ellinas has grabbed an early edge in the GP3 title chase this year, opening a 19-point lead over Facu Regalia by the championship's halfway point.
Marussia will run its reserve driver Rodolfo Gonzalez on the remaining two days of the July 17-19 test.
Gonzalez is also driving in Friday practice for Marussia in a handful of grands prix this year, adding last weekend's event in Germany to previous outings in Bahrain and Spain.