The Patak curry pastes are a good place to start but I prefer to use the jamie oliver curry pastes, it's just more satisfying cooking everything from scratch.
http://www.jamieoliver.com/recipes/curry-recipes/easy-homemade-curry-pastes
The Jalfrezi and Rogon Josh are both good.
http://www.jamieoliver.com/recipes/curry-recipes/easy-homemade-curry-pastes
The Jalfrezi and Rogon Josh are both good.