In 2010, the rules will demand further increases in engine life with each rider being limited to six engines for the whole 18-race series.
In the 250cc World Championship, Hiroshi Aoyama opened up a 15 point lead following his third victory of the season riding the Scot Honda at Donington.
Spaniard Alvaro Bautista wants to clinch the last 250cc World Championship before his expected switch to MotoGP next year but it's going to be tough. The Mapfre Aspar Aprilia rider is second in the Championship but needs to get back to winning ways with his last victory in Assen.
There is a tremendous battle for third place between current world champion Marco Simoncelli - confirmed at Gresini for 2010 - and Hector Barbara and look out also for veteran Alex Debon who won the race last year.
While his rivals fell by the wayside Julian Simon kept calm at Donington to win the 125cc race and build up an impressive 50 point lead in the Championship.
He will take some catching but anything can happen in the 125cc class although his team-mates Sergio Gadea and Bradley Smith will have to start winning again to exert any real pressure on the champion elect.