Fresh off a new two-year WorldSBK contract extension with Pata Yamaha, Toprak Razgatlioglu was second fastest behind Jonathan Rea after provisionally topping FP1. 

WorldSBK Donington Park, Great Britain - Free Practice Results (1)
PosRiderNatTeamTime
1Jonathan ReaGBRKawasaki Racing Team1:27.841s
2Toprak RazgatliogluTURPATA Yamaha+0.264s
3Tom SykesGBRMotorrad BMW WorldSBK Team+0.361s
4Michael RinaldiITAAruba.It Ducati+0.719s
5Garrett GerloffUSAGRT Yamaha+0.840s
6Scott ReddingGBRAruba.It Ducati+0.973s
7Leon HaslamGBRTeam HRC+1.002s
8Alex LowesGBRKawasaki Racing Team+1.187s
9Michael Van Der MarkNEDMotorrad BMW WorldSBK Team+1.263s
10Chaz DaviesGBRGoEleven Ducati+1.331s
11Lucas MahiasFRAKawasaki Puccetti+1.664s
12Axel BassaniITAMotocorsa Ducati+1.766s
13Andrea LocatelliITAPATA Yamaha+1.905s
14Alvaro BautistaSPATeam HRC+2.091s
15Jonas FolgerGERBenovo BMW+2.236s
16Tito RabatSPABarni Ducati+2.316s
17Luke MosseyGBRPedercini Kawasaki+3.112s
18Christophe PonssonFRAGil Yamaha+3.738s
19Isaac VinalesSPAOrelac Racing Kawasaki+4.039s
20Loris CressonBELPedercini Kawasaki+4.192s
21Kohta NozaneJPNGRT Yamaha+7.638s
22Eugene LavertyIRLRC Squadra Corse BMW 

After being stuck in pit lane for 15 minutes due to a technical issue, Razgatlioglu eventually headed out and was immediately on the pace. The 24 year-old went over a tenth quicker than Jonathan Rea on his final lap, however, the Yamaha rider's time was deleted for exceeding track limits once the session was over. 

It means a time of 1:27.841s was good enough for Rea to retain top spot - only man under the 1m 28s barrier.

Nine-time WorldSBK race winner at Donington Park, Tom Sykes, suffered a cold tyre crash less than five minutes in at the Melbourne Loop. However, Sykes remounted to set some blistering laps at the front of the field.

Sykes was fastest for most of the session, before Rea took over with a quarter of FP1 remaining.  

More lap times were deleted after the session finished, as Scott Redding who was fourth fastest for Aruba.it Ducati was instead relegated to sixth, behind team-mate Michael Rinaldi and Garrett Gerloff who claimed fifth.

British Superstock rider Luke Mossey is replacing Samuele Cavalieri at Pedercini Kawasaki after the Italian rider and team decided to end their partnership. Mossey finished FP1 17th fastest.