Max Chilton and Walter Grubmuller both secured a top ten finish as the British F3 International Series headed to Belgium for the latest rounds of the season at Spa.

Austrian racer Grubmuller made a solid start in race one to climb into the top ten by the second lap and then set about challenging Euroseries regular Daniel Campos-Hull for ninth - taking the position on lap five.

From there he closed in on the rear of Michael Devaney before taking the flag in eighth place but there was disappointment for team-mate Chilton who could finish only 17th after being given a drive-through penalty for jumping the start.

However it was Chilton who brought his Dallara-Mercedes home in the points in the second race of the weekend, despite starting down on the eighth row of the grid.

As the pack filed into La Source for the first time, there was contact between Sam Abay and Marcus Ericsson, allowing 17 year-old Chilton to nip up the inside exiting the right-hander into a superb sixth place.

However his great form was brought to a premature end when a mechanical problem slowed a car in front and forced Chilton to take avoiding action, allowing Henry Arundel through. For two thirds of the 12-lap race Max held onto seventh, but on lap eight, the teenager came under pressure from Daniel Campos-Hull and Philip Major, the pair finding a way past at Les Combes and a lap later he'd dropped to tenth when Sebastian Hohenthal found a way past.

He crossed the line tenth but with Invitation class runner Campos-Hull unable to score points, he took points for ninth place.

Grubmuller unfortunately was forced to retire after a first corner clash with Atte Mustonen and John Martin.