grand nation... betting on-line?

Query by gemma_safc: grand nation... betting on the web? any person no of any internet sites that have very good on the internet bonus' for initial time registration.. ive had a search n they all say like £20 free of charge bet but when you read into it they want you to put £20 on on one horse in 1 go? i want to deposit £20 n actually have £40 to perform with or is this unattainable? i no with bingo websites n stuff u deposit £20 u get £40 is it achievable with any betting internet sites? significantly appreciated if any1 can aid