The National Superstock 1000 Championship and the 250GP ACU National Championship has been confirmed on the MotoGP British Grand Prix support package this year ahead of the series' return to Silverstone.

In addition to the MotoGP blue riband event, as well as the new Moto2 series and 125cc class, the AirAsia backed event will feature two rounds of the Superstock championship, as well as single round of the National 250GP category.

The decision to include the National Superstock series onto the support package comes as preparations continue for what promises to be one of the most interesting seasons in recent years.

A total of eight manufacturers - BMW, Honda, Suzuki, Yamaha, Kawasaki, Ducati, Aprilia and KTM - will participate in 2010, with the likes of Steve Plater, Glen Richards, John McGuinness, Karl Harris and Scott Smart among the riders taking part.

The British Grand Prix programme will be completed by a round of the 250GP ACU National Championship, with a full grid of 250cc 2-strokes, celebrating the class which, in 2009, saw its final year as a World Championship category.

"In terms of quality on-track content, Silverstone is delivering the very best race package for fans," said Silverstone managing director Richard Phillips.

"Everyone's looking forward to seeing the likes of Rossi, Stoner and Lorenzo go head to head around the super-fast, technically challenging circuit here at Silverstone. In addition to MotoGP, the World Moto2 Championship will be making its UK debut, with Scott Redding flying the flag for the Brits, and there's a great chance of British success in the World 125 GP, with Bradley Smith and Danny Webb leading the charge.

"Add to this, two rounds of the National Superstock 1000 Championship, featuring the cream of British Championship racing stars, and the 250GP ACU National Championship race, ensuring the distinctive sounds and smells of 250cc 2-strokes ring around Silverstone, and we have a fantastic offering for the fans."