BAFL have a website with all the details of the weekends games. http://www.bafl.org.uk/artman2/publish/BritBowl_46/index.asp and scores will be posted there. I recommend a visit - even if you can't get to Doncaster.
The weekend will conclude with the BritBowl XXII game itself between the Coventry (Cassidy) Jets and the London Blitz. These two teams met in last year's final - though as a Jets fan, I'm hoping the outcome will be different. I'm sure it's going to be a great game - but good luck Jets!!!
The teams websites are
Coventry Jets: http://www.cassidyjets.com/
London Blitz: http://www.londonblitz.com/