The 33rd B.R.D.C. International Trophy, was the opening round of the 1981 European Championship for F2 Drivers. This was held at Silverstone, on 29 March.
A total of 46 F2 cars were entered for the event, however just 31 took part in qualifying.
Mike Thackwell took pole position for Ralt Racing Ltd, in their Ralt-Honda RH6/81, averaging a speed of 133.59 mph.
The race was held over 47 laps on a wet Silverstone Grand Prix circuit. Mike Thackwell took the winner spoils for works Ralt team, driving their Ralt-Honda RH6/81. Thackwell won in a time of 1hr 11:44.67mins., averaging a speed of 115.23 mph. Over 30 seconds behind was the second place car, driven by Riccardo Paletti, in the March Onyx Racing Team’s March-BMW 812. The podium was completed by another Italian, Corrado Fabi, in his Roloil Marlboro Racing/March Racing Ltd-entered March-BMW 812, albeit one lap adrift.