Strakka Racing's Tio Ellinas recovered from a fuel pump problem in the opening session to lead the Formula Renault 3.5 practice day at Silverstone
The Cypriot set a quickest lap of 1m41.494s three minutes before the chequered flag in practice two, edging out DAMS' Red Bull junior Dean Stoneman by 0.158 seconds.
Ellinas' difficulties in first practice, when his car ground to a halt at The Loop, led to the morning session being red-flagged for the second time.
"It's good to be back in a car after the championship's long [two-month] summer break," said Ellinas, who is striving for his maiden FR3.5 win.
"It has been a bit tough and intense for my family recently as my grandfather has just died, so I hope I can achieve a good result this weekend to dedicate something to him."
Draco driver Pietro Fantin had set the fastest time on Friday morning.
The Brazilian recorded a quickest lap of 1m43.055s, some 0.488s clear of championship challenger Matthieu Vaxiviere, who backed up his morning effort with third in second practice and is aiming to reduce a 26-point deficit to leader Oliver Rowland over the weekend.
DAMS pairing Nyck de Vries and Dean Stoneman finished third and fifth in session one, sandwiching Ellinas.
The 2015 Formula Renault 3.5 season will be notable for being the last with the French company's backing but also produced a worthy champion in Oliver Rowland. PETER MILLS evaluates this year's crop of drivers
Last year's field was extraordinary and hard to match, but the Formula Renault 3.5 grid will still have plenty of talent this season. Glenn Freeman runs through the field ahead of this weekend's season opener
Landing the Fortec seat that took rising star Robin Frijns to the 2012 FR3.5 title was already a good sign for Stoffel Vandoorne. Then McLaren took him under its wing. Peter Mills tells Vandoorne's story so far