Ladbrokes

Ladbrokes are the number one bookmaker in the UK. Their Iphone App is excellent, it covers a full range of sports:

 

 

The picture on the right shows their Iphone App in action.

It is a lot easier to open an account online and then use this on your iphone. You can open an account with Ladbrokes using the banner below:

Ladbrokes Iphone App
Actual Iphone App images