click the link below then click on tickets and fill in your details. you can get upto 4 free tickets, they do take a while to arrive though.
be quick so you dont miss out
http://www.worldseriesbyrenault.com/donington/UK
lee
i recived the email yesterday for the event and as i went last year i can confirm it is a cracking day out for all the family. loads of stuff to do for all the family and its free what more could you want 
jon