Toseland leads the standings by five points from Biaggi

Toseland led home Troy Corser and Max Biaggi in the first race, while Noriyuki Haga edged Biaggi in race two.

Toseland now leads the standings by just five points from Biaggi.

Pole sitter Troy Bayliss skidded out early on while leading race one and lost most of the little finger on his right hand as a result of the crash.

Bayliss was taken to Derbyshire Royal Infirmary in nearby Derby for plastic surgery but should feature once more in the next round at Valencia in two weeks' time.

Toseland dominated race one and was leading race two when a bike failure forced him out.

"To say I am disappointed is an understatement because the double win on home soil has eluded me once again," said the 26-year-old Honda Ten Kate rider.

On the last corner I made a totally stupid mistake Max Biaggi

"I felt really confident about winning the second race but, as I was shifting through the gears into Redgate, I felt a problem with the engine which caused it to cease."

Haga overtook Suzuki's Biaggi on the final corner of race two when the Italian ran wide, with Corser finishing third.

"It was my father's birthday today so I wanted to win for him today, that was all I was thinking about," said Haga.

"In the first race my rear tyre was not working very well but everything was perfect in race two."

Italian Biaggi was left to rue the mistake that cost him victory in the last race - a win that would have put him level on points with Toseland.

"I am smiling on the outside - but not much. On the inside I feel different," he said.

"I was running second and then managed to overtake Nori but I always knew he was on my back and on the last corner I made a totally stupid mistake.

"These things can happen but they should not."

Race one results:
1. James Toseland (GB) Honda 35mins 28.222secs
2. Troy Corser (Aus) Yamaha 35:29.590
3. Max Biaggi (It) Suzuki 35:30.670
4. Noriyuki Haga (Jpn) Yamaha 35:37.471
5. Lorenzo Lanzi (It) Ducati 35:46.250
6. Fonsi Nieto (Sp) Kawasaki 35:47.178
7. Regis Laconi (Fr) Kawasaki 35:58.220
8. Max Neukirchner (Ger) Suzuki 35:58.518
9. Roberto Rolfo (It) Honda 35:58.747
10. Jakub Smrz (Cze) Ducati 36:04.883

Race two results:
1. Haga 35mins 26.734secs
2. Biaggi 35:26.845
3. Corser 35:27.834
4. Ruben Xaus (Sp) Ducati 35:32.661
5. Lanzi 35:36.568
6. Laconi 35:38.937
7. Rolfo 35:49.021
8. Smrz 35:56.794
9. Karl Muggeridge (Aus) Honda 36:04.468
10. Neukirchner 36:06.627

Rider standings:
1. Toseland 115pts
2. Biaggi 110
3. Haga 88
4. Corser 81
5. Lanzi 66

Manufacturer standings:
1. Honda 124pts
2. Suzuki 110
3. Yamaha 98
4. Ducati 94
5. Kawasaki 40